Commander 2014

Create an X/X black Horror creature token, where X is the number of creatures that died this turn.

Starstorm deals X damage to each creature. Cycling {3} ({3}, Discard this card: Draw a card.)

Target player draws X cards.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Until end of turn...

Tendrils of Corruption deals X damage to target creature and you gain X life, where X is the number of Swamps you control.

Target creature gets -1/-1 until end of turn. Morbid — That creature gets -13/-13 until end of turn instead if a creature died this turn.

Until end of turn, target creature loses all abilities and becomes a blue Frog with base power and toughness 1/1.

Destroy target nonbasic land you don't control and target nonbasic land of an opponent's choice you don't control. Volcanic Offering deals 7 damage...

Cast this spell only during combat on an opponent's turn. Return X target creature cards from your graveyard to the battlefield. Sacrifice those cr...

Create X 2/2 white Cat creature tokens. Shuffle White Sun's Zenith into its owner's library.

Target player sacrifices an attacking creature of their choice. Storm (When you cast this spell, copy it for each spell cast before it this turn. Y...

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Untap target perm...