As an additional cost to cast this spell, sacrifice a creature.
You draw cards equal to the sacrificed creature's power, then you gain life equal to its toughness.

Flying
When this creature enters, target player loses 2 life and you gain 2 life.

All creatures get -4/-4 until end of turn.

Deathtouch
Whenever this creature deals combat damage to a player, that player discards a card and you create a tapped 2/2 black Zombie creature token.

When this creature enters, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Flying
Whenever a creature an opponent controls dies, you may gain 3 life.
Whenever an opponent discards a card, you may gain 3 life.

When this creature enters, return target creature card of an opponent's choice from your graveyard to your hand.

, , Sacrifice this creature: It deals X damage to any target.

Flying
When this creature enters, you gain 3 life.

Choose any target. Scry 3, then reveal the top card of your library. Riddle of Lightning deals damage equal to that card's mana value to that permanent or player.

Create four 1/1 red Goblin creature tokens.

Whenever one or more non-Human creatures you control deal combat damage to a player, draw a card.

Sarkhan's Rage deals 5 damage to any target. If you control no Dragons, Sarkhan's Rage deals 2 damage to you.

Flying
When this creature enters, create two Treasure tokens. (They're artifacts with ", Sacrifice this token: Add one mana of any color.")

Enchant creature
Enchanted creature gets +3/+3 and has "At the beginning of each upkeep, create a 1/1 green Saproling creature token."

Flying
Other Spirit creatures you control get +1/+0.

Flying, trample, haste
At the beginning of the end step, this creature's owner shuffles it into their library.

Flying
When this creature dies, exile target permanent.

, , Sacrifice another creature: Create X 2/2 black Zombie creature tokens, where X is the sacrificed creature's power.

Flying
When this creature enters, put a +1/+1 counter on each creature you control with a +1/+1 counter on it.

Flying
When this creature enters, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

: This creature deals 1 damage to target player.

Landfall — Whenever a land you control enters, create a 2/2 green Elemental creature token.

Whenever a creature dies, put a charge counter on this enchantment.
At the beginning of your first main phase, add for each charge counter on this enchantment.

Whenever Sethron or another nontoken Minotaur you control enters, create a 2/3 red Minotaur creature token.
: Minotaurs you control get +1/+0 and gain menace and haste until end of turn. ( can be paid with either or .)

As long as you control eight or more lands, this creature gets +4/+4 and has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)

Flying
Whenever this creature or another creature you control with flying enters, you may gain life equal to that creature's power.

Whenever an opponent loses life, you gain that much life.

Flying
: Attacking creatures with flying get +1/+1 until end of turn. ( can be paid with either or .)
Whenever three or more creatures you control with flying attack, each player gains control of a nonland permanent of your choice controlled by the player to their right.

Create two 2/3 red Minotaur creature tokens with haste.

Enchant creature
When this Aura enters, create a 2/2 white Knight creature token with vigilance. (Attacking doesn't cause it to tap.)
Enchanted creature gets +2/+2 and has vigilance.

When this creature enters, it deals 2 damage to target creature.

Enchant land
Enchanted land is a 6/4 green Elemental creature. It's still a land.
When enchanted land dies, return that card to its owner's hand.

When this creature enters, you gain 5 life.
When this creature leaves the battlefield, create a 3/3 green Beast creature token.

Flying
This creature enters with two +1/+1 counters on it.
Whenever another creature dies, put a +1/+1 counter on this creature.