Flusterstorm [Iconic Masters]

Flusterstorm [Iconic Masters]Set: Iconic Masters Type: Instant Rarity: Rare Cost: {U} Counter target instant or sorcery spell unless its controller pays {1}. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

you assign the combat damage of each creature attacking you

Set: Guilds of Ravnica Prerelease Promos Type: Creature — Elemental Rarity: Rare Cost: {1}{R} Whenever you cast a red spell

Set: Commander 2011 Type: Enchantment Rarity: Uncommon Cost: {2}{U} Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you

Others aren't so obvious

A scavenger's favorite appetizer is death

Set: Dark Ascension Promos Type: Creature — Spirit Rarity: Uncommon Cost: {G}{G} Haste

piercing illusion and darkness

put that many +1/+1 counters or charge counters on an artifact you control

Molten Sentry enters the battlefield as a 5/2 creature with haste

There the gwyllions dance

When Earthbind enters the battlefield

Set: Visions Type: Sorcery Rarity: Rare Cost: {2}{B}{B} Sacrifice a nontoken permanent