Target creature gets +3/+3 until end of turn.

As an additional cost to cast this spell, sacrifice a creature or discard a card.
Destroy target creature or planeswalker.

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

Sacrifice this creature: Put a +1/+1 counter on target creature.

Enchant creature
When this Aura enters, draw a card.
Enchanted creature has ": This creature gets +1/+0 until end of turn."

When this enchantment enters, create a 1/1 green Squirrel creature token.
Whenever a nontoken creature you control dies, you may pay . If you do, return this enchantment to its owner's hand.

Target creature can't block this turn.
Draw a card.

Lightning Bolt deals 3 damage to any target.

Exile target creature. Its controller gains life equal to its power.

Return target creature card and all other cards with the same name as that card from your graveyard to your hand.

, Sacrifice a Goblin: This creature gets +2/+2 until end of turn.

Whenever this creature enters or attacks, you get .
Pay : this creature perpetually gets +1/+0. You may choose a creature card in your hand. If you do, that card perpetually gets +1/+0.

This creature can't attack alone.

Lifelink
Modular 1 (This creature enters with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Battalion — Whenever this creature and at least two other creatures attack, this creature gets +2/+2 until end of turn.

Until end of turn, target creature you control becomes a green Wurm with base power and toughness 6/4.
Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Choose one —
• You gain 4 life.
• Destroy target enchantment.
• Put a +1/+1 counter on target creature.

Create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Whenever you sacrifice an artifact or creature, put a +1/+1 counter on this creature.
, Sacrifice an artifact or creature: You gain 1 life and draw a card.

When this creature dies, create X tapped 1/1 green Squirrel creature tokens, where X is this creature's power.

Haste
When Reckless Ringleader enters the battlefield, choose a creature card in your hand. It perpetually gains haste.

Whenever another red creature you control enters, this creature gets +1/+0 until end of turn.

If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on it instead.

, Sacrifice this creature: Creatures you control get +1/+1 until end of turn.

Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.

Haste
Echo—Discard a card. (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Enchant creature
Enchanted creature gets +1/+1 and has flying.
: Return Skyblade's Boon to its owner's hand. Activate only if Skyblade's Boon is on the battlefield or in your graveyard.

Lifelink
When Leonin Sanctifier enters the battlefield, choose a creature card in your hand. It perpetually gains lifelink.

, Sacrifice another creature: Each opponent loses 2 life and you gain 2 life.

Outlast (, : Put a +1/+1 counter on this creature. Outlast only as a sorcery.)
Each creature you control with a +1/+1 counter on it has first strike.

Target creature you control gains protection from the color of your choice until end of turn.
Draw a card.

Discard a card: This creature gains lifelink until end of turn.
Threshold — This creature gets +1/+2 as long as there are seven or more cards in your graveyard.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
This creature can't block.

Reach
When this creature enters, seek an Elf card.

Flying
: Add one mana of any color.