You may discard a Plains card rather than pay this spell's mana cost.
Destroy target artifact or enchantment.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Double strike
Eternalize (, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Cat with no mana cost. Eternalize only as a sorcery.)

Remove all counters from all permanents and exile all tokens.

Flying

Whenever Alaborn Cavalier attacks, you may tap target creature.

Cast this spell only during combat after blockers are declared.
Flip a coin. If you win the flip, target creature gets +1/+1 until end of turn.
Draw a card at the beginning of the next turn's upkeep.

This spell can't be countered.
You may have Altered Ego enter the battlefield as a copy of any creature on the battlefield, except it enters with X additional +1/+1 counters on it.

Target creature you control gets +1/+0 until end of turn. It deals damage equal to its power to target creature an opponent controls.

Tap five untapped Clerics you control: You gain 10 life.

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. Angel's Trumpet deals damage to the player equal to the number of creatures tapped this way.

Destroy target nonblack creature. It can't be regenerated.
Draw a card.

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

If this spell was cast from your hand and you've cast another spell named Approach of the Second Sun this game, you win the game. Otherwise, put Approach of the Second Sun into its owner's library seventh from the top and you gain 7 life.

, : Arashi, the Sky Asunder deals X damage to target creature with flying.
Channel — , Discard Arashi: Arashi deals X damage to each creature with flying.

Sacrifice an artifact: Put a +1/+1 counter on Arcbound Ravager.
Modular 1 (This creature enters the battlefield with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Flying, trample
At the beginning of your upkeep, sacrifice a Human. If you can't, tap Archdemon of Greed and it deals 9 damage to you.

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.)
Whenever this creature mutates, tap up to X target creatures, where X is the number of times this creature has mutated. Those creatures don't untap during their controller's next untap step.

Trample
When Argothian Wurm enters the battlefield, any player may sacrifice a land. If a player does, put Argothian Wurm on top of its owner's library.

Destroy target untapped creature.