Banding (Just ask around until you find someone who knows.)
Creature spells you cast with banding cost less to cast.
Whenever two or more creatures you control attack in a band, each creature in that band gets +1/+1 until end of turn for each creature in that band.

( can be paid with one mana from a legendary source.)
Other legendary creatures you control get +1/+1 and have indestructible.

(You have to pay to play this land as your land drop. It's green.)
When Glade of the Pump Spells enters the battlefield, up to one target creature gets +2/+2 and gains trample until end of turn.
: Add .

Haste
Whenever Toralf's Disciple attacks, conjure four cards named Lightning Bolt into your library, then shuffle.

Each creature assigns combat damage equal to its mana value rather than its power.

Each creature card in your hand has a Adventure sorcery named Fetch Herbs with "You gain 2 life." (You may cast it as the Adventure for . Then exile it, and you may cast the creature later from exile.)
Each creature card you cast from exile enters the battlefield with an additional +1/+1 counter on it.

Plainswalk
Planeswalkerwalk (This creature can't be blocked as long as defending player controls a planeswalker.)
Whenever Plain Walker deals combat damage to a player or planeswalker, planeswalk. (If you're playing Planechase, proceed to the next plane.)

: Destroy target nontoken land. Its controller creates a Mana Confluence token. (It's a land with ", Pay 1 life: Add one mana of any color.")

Exile target creature an opponent controls. That player reveals cards from their sideboard at random until they reveal a nonland card. They may cast that card without paying its mana cost.

Flying
When Oracle of the Alpha enters the battlefield, conjure the Power Nine into your library, then shuffle.
Whenever Oracle of the Alpha attacks, scry 1.

If your life total is greater than 10, it becomes 10. For the rest of the game, your maximum life total is 10. You get an emblem with "Pay 2 life: Add one mana of any color" and "At the beginning of your upkeep, you draw a card and you lose 1 life."

When you cast this spell, create a 1/1 white Athlete creature token.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

When Sanguine Brushstroke enters the battlefield, create a Blood token and conjure a card named Blood Artist onto the battlefield.
Whenever you sacrifice a Blood token, each opponent loses 1 life and you gain 1 life.

First strike
Prevent all combat damage that would be dealt by blocking creatures that are tapped.
: Tap target creature blocking New Master of Arms.

Phyrexian Seedling enters the battlefield with a +1/+1 counter on it.
Proliferatelink (Damage dealt by this creature also causes you to proliferate that many times. You proliferate before checking for lethal damage on creatures.)

At the beginning of each combat, creatures you control gain banding until end of turn if a creature you control has banding. The same is true for changeling, devoid, fear, flanking, horsemanship, ingest, intimidate, landwalk, shroud, tantrum, wither, and the activated ability "Sacrifice this creature: Add ."

Enchant card in your hand (This Aura remains on the battlefield. If you play enchanted card or it otherwise leaves your hand, put this Aura into the graveyard.)
Enchanted card costs less to cast.
When you cast enchanted card, copy it.

When Duelists' Convocation International enters the battlefield, choose a 10-digit number at random and write it down.
Whenever you play a land or cast a spell, if it shares a mana value with one or more uncrossed digits in the chosen number, cross out one of those digits and draw a card. Then if all ten digits are crossed out, you win the game.

Retrace (Sorry, no room for reminder text.)
Choose one at random. Create a copy of the chosen card. You may cast the copy without paying its mana cost.
• Abrupt Decay
• Blightning
• Bloodbraid Elf
• Lightning Bolt
• Liliana of the Veil
• Tarmogoyf

Library ninjutsu (, Shuffle an unblocked attacker you control into its owner's library: Put this card onto the battlefield from your library tapped and attacking. Activate only while searching your library.)
Whenever Panglacial Shinobi deals combat damage to a player, draw a card.

Bedtime story (Don't put a lore counter on this Saga as it enters. Put a lore counter on it at the beginning of your end step rather than your main phase. Sacrifice after III.)
I — Create two 1/1 blue Merfolk creature tokens.
II — Put a flying counter on each tapped creature you control.
III — Draw a card for each creature you control that dealt combat damage to a player this turn.

Deathtouch
Whenever Pinchy McStingbutt deals combat damage to a player, conjure a card named Death of a Thousand Stings, Lethal Sting, or Stinging Shot at random into your hand and reveal it. (Treat conjured cards like cards.)

( is a land drop. You may give up one potential land drop this turn to pay for .)
Whenever Boulder Jockey attacks, you may pay . If you do, create a 3/3 colorless Construct artifact creature token named Boulder that's tapped and attacking. Sacrifice that token at the beginning of the next end step.

At the beginning of your upkeep, put a tide counter on Rikala. Then if there are four or more tide counters on Rikala, remove them.
Creatures you control get +1/+0 for each tide counter on Rikala.
Whenever you tap an Island for mana, if there are three or more tide counters on Rikala, add an additional .

Deathtouch, Lifelink
At the beginning of your second main phase, if you gained 4 or more life this turn, conjure a card named Mox Pearl into your hand. This ability triggers only once.
: Another target creature perpetually gains lifelink.

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.)
Discover X, where X is the amount of mana spent to cast this spell. (Exile cards from the top of your library until you exile a nonland card with that mana value or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)
Ashaya's Enduring Bond can be your commander.

Rulebreaker — A deck with this commander has no maximum deck size.
, : You draw a card and gain 1 life. This ability costs less to activate if you had 200 or more cards in your starting deck.

Flying
If you would create one or more tokens, you may create that many Clue tokens instead. (They're artifacts with ", Sacrifice this token: Draw a card.")

Eminence — At the beginning of your upkeep, Sahir deals 1 damage to you. This ability triggers only if Sahir is in the command zone or on the battlefield.
Whenever a source you control deals exactly 1 damage to you and whenever a spell or ability you control causes you to lose exactly 1 life, put a +1/+1 counter on Sahir. If this is the second time this ability has resolved this turn, draw a card.

Prowess
When you cast your second noncreature spell in a turn, conjure a card named Mox Sapphire into your hand. This ability triggers only once.
: Target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost.

Whenever another creature dies, create a Food token. This ability triggers only once each turn. (It's an artifact with ", , Sacrifice this token: You gain 3 life.")
For every seven Foods you control, Squirrels you control get +3/+3.

If a triggered ability of a permanent you control but don't own triggers, that ability triggers an additional time.

Whenever a creature you control becomes blocked, you may untap it and remove it from combat.
, Sacrifice Nivea: Create an Akroma, Angel of Wrath token. (She's a legendary 6/6 Angel creature with flying, first strike, vigilance, trample, haste, and protection from black and from red.)

Rulebreaker — A deck with this commander can have Aura cards of any color identity and any basic land cards.
+1: Add one mana of any color. When you spend this mana to cast an Aura spell this turn, create a 1/1 red Gremlin creature token.
−3: Discard your hand, then draw cards equal to twice the number of Auras you control. For each Aura attached to you, attach it to an opponent of your choice.
The Unluckiest Planeswalker can be your commander.

Shadow (This creature can block or be blocked by only creatures with shadow.)
Whenever a creature you control with shadow deals combat damage to a player, draw a card.
: Put a shadow counter on another target creature. Activate only as a sorcery.

Whenever Massimo or another creature you control enters, exile up to one target instant or sorcery card with mana value 1 from your graveyard. If a card is exiled this way, that creature gains "Whenever this creature deals combat damage to a player, copy the exiled card. You may cast the copy without paying its mana cost."