Exile target spell, then roll a d20 and add that spell's mana value.
1—14 | You may cast the exiled card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.
15+ | You may cast the exiled card without paying its mana cost for as long as it remains exiled.

Flying
Whenever a Dragon you control is dealt damage, it deals that much damage to any target that isn't a Dragon.

Flying
Whenever Chaos Balor attacks or dies, choose two. Each mode must target a different player.
• Target player discards all the cards in their hand, then seeks that many nonland cards.
• Chaos Balor deals 2 damage to target player and they create two Treasure tokens.
• Chaos Balor deals 2 damage to each creature target player controls. Those creatures perpetually get +2/+0.

Reach
Whenever this creature deals combat damage to a player, create a 2/1 black Spider creature token with menace and reach.

Flying
Other Demons, Devils, Imps, and Tieflings you control get +1/+1 and have lifelink.
At the beginning of each end step, if a creature card was put into your graveyard from anywhere this turn, create a 1/1 red Devil creature token with "When this token dies, it deals 1 damage to any target."

Whenever you cast an instant or sorcery spell, each opponent loses 2 life.

Whenever you cast an instant or sorcery spell, put two +1/+1 counters on target creature.

When this creature specializes, seek a creature card and put it into your graveyard, then conjure two duplicates of it into your graveyard.
At the beginning of combat on your turn, target creature you control gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard.

Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

Specialize
Whenever Skanos, Dragon Vassal attacks, another target attacking creature gets +X/+0 until end of turn, where X is Skanos's power.

Menace
At the beginning of combat on your turn, target creature you control gains menace and gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard.

Flash (You may cast this spell any time you could cast an instant.)
When this creature enters, counter target artifact or creature spell.

Target creature gets -11/-11 until end of turn.

Trample
Keen Senses — When this creature enters, draw a card.

First strike
At the beginning of combat on your turn, target creature you control gains first strike and gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard.

As this enchantment enters, choose a creature type.
Whenever a creature you control of the chosen type enters or attacks, draw a card.

Double strike
When this creature enters or specializes, return up to two target creature cards with total mana value 3 or less from your graveyard to the battlefield.

Trample
Whenever Thrakkus attacks, double the power of each Dragon you control until end of turn.

Double strike
When this creature enters or specializes, conjure a duplicate of a random creature card from an opponent's library into your hand. It perpetually gains "You may spend mana as though it were mana of any color to cast this spell."

Double strike
When this creature enters or specializes, other creatures you control and creature cards in your hand perpetually get +1/+1.

Specialize
When Wyll, Pact-Bound Duelist enters, gain control of target artifact or creature an opponent controls with mana value 4 or less until the end of your next turn.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
Flash
Whenever this creature mutates, you may return target creature an opponent controls to its owner's hand.

Whenever you attack, up to one target attacking creature can't be blocked this turn. At the beginning of the next end step, return that creature to its owner's hand. If you do, create a 1/1 white Soldier creature token.

Whenever you cast an instant or sorcery spell, Gale, Storm Conduit perpetually gains "Creatures you control get +1/+0."

Whenever you attack, up to one target attacking creature can't be blocked this turn. At the beginning of the next end step, return that creature to its owner's hand. If you do, create a Treasure token.

Farideh's Fireball deals 5 damage to target creature or planeswalker. Roll a d20.
1—9 | Farideh's Fireball deals 2 damage to each player.
10—20 | Farideh's Fireball deals 2 damage to each opponent.

Flying
Whenever you cast an Adventure or Dragon spell, Lozhan deals damage equal to that spell's mana value to any target that isn't a commander.

When Minsc & Boo, Timeless Heroes enters and at the beginning of your upkeep, if you don't control a creature named Boo, create Boo, a legendary 1/1 red Hamster creature token with trample and haste.
+1: Put three +1/+1 counters on up to one target creature with trample or haste.
−2: Sacrifice a creature. When you do, Minsc & Boo, Timeless Heroes deals X damage to any target, where X is that creature's power. If the sacrificed creature was a Hamster, draw X cards.

Trample
At the beginning of combat on your turn, target creature you control gains trample and gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard.

Beacon of Hope — When this creature enters, creatures you control get +1/+1 and gain vigilance until end of turn.

Whenever you cast an instant or sorcery spell, draw a card, then discard a card.

Whenever you cast an instant or sorcery spell, create a 1/1 white Pegasus creature token with flying.

Haste, double team (When this creature attacks, conjure a duplicate into your hand, then both of them perpetually lose double team.)

You may mill three cards. Then return a creature card from your graveyard to the battlefield. (To mill a card, put the top card of your library into your graveyard.)

Whenever you attack, up to one target attacking creature can't be blocked this turn. At the beginning of the next end step, return that creature to its owner's hand. If you do, a creature of your choice an opponent controls perpetually gets -1/-0.

Molting Exoskeleton — When Hook Horror dies, it perpetually gets -1/-1. Then if that card's toughness is 1 or greater, return it to the battlefield under its owner's control.