As an additional cost to cast this spell, sacrifice a permanent.
Exile target artifact, creature, or enchantment.

Flying
When this creature enters, put a +1/+1 counter on each of up to two other target creatures.

Whenever a creature is put into your graveyard from the battlefield, you may sacrifice this enchantment. If you do, return that card to the battlefield.

Enchant creature
Enchanted creature gets +3/+3 and has flying.

Flying
When this creature enters, you may destroy target nonland permanent.

Flying, vigilance
Whenever this creature or another nontoken creature you control enters, create a 1/1 red Mercenary creature token with ": Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."
Whenever this creature attacks, if its power is 6 or greater, draw a card.

Creatures you control get +0/+1.
Sacrifice this enchantment: Return target creature to its owner's hand.

Flying
At the beginning of each combat, choose first strike, vigilance, or lifelink. Creatures you control gain that ability until end of turn.

Flying
Whenever another permanent you control leaves the battlefield, if it had counters on it, investigate.

Creatures you control get +1/+1 as long as you control no nonartifact, nonwhite creatures.

Defender
Flying

Whenever a player casts a white spell, you may gain 1 life.

Split second
You can't lose the game this turn and your opponents can't win the game this turn. Until end of turn, damage that would reduce your life total to less than 1 reduces it to 1 instead.

, , Sacrifice a green creature, a white creature, and a blue creature: Search your library for a card named Empyrial Archangel, put it onto the battlefield, then shuffle.

You gain 7 life.

Whenever a creature you control enters, you may have this artifact become a 3/3 white Angel artifact creature with flying until end of turn.

All creatures have vigilance.
At the beginning of each player's end step, tap all untapped creatures that player controls that didn't attack this turn. This artifact deals damage to the player equal to the number of creatures tapped this way.

Prevent all combat damage that would be dealt this turn.
Cycling

Haste
As long as this card is in your graveyard and you control a Mountain, creatures you control have haste.

Anger of the Gods deals 3 damage to each creature. If a creature dealt damage this way would die this turn, exile it instead.

Flying
When this creature enters, you may return target creature to its owner's hand.

Hexproof
Creatures your opponents control attack each combat if able.