Attrition [Urza's Destiny]Set: Urza's Destiny Type: Enchantment Rarity: Rare Cost: {1}{B}{B} {B}, Sacrifice a creature: Destroy target nonblack creature. "I will trade life for life with the insurgents. Our resources, unlike theirs, are limitless." Davvol, Evincar of Rath

For each opponent who does

Whenever Kalonian Hydra attacks

Set: Amonkhet Invocations Type: Sorcery Rarity: Mythic Cost: {1}{B} As an additional cost to cast this spell

The worst part isn't the pain

Set: San Diego Comic-Con 2013 Type: Legendary Planeswalker — Ajani Rarity: Mythic Cost: {1}{W}{W} +1: Put a +1/+1 counter on up to one target creature

then put two cards from your hand on top of your library in any order

Set: Eighth Edition Type: Artifact Rarity: Rare Cost: {3} Creatures with power greater than the number of cards in your hand can't attack

Set: Junior Series Europe Type: Creature — Phoenix Rarity: Rare Cost: {4}{R} Flying (This creature can't be blocked except by creatures with flying or reach

Set: Classic Sixth Edition Type: Instant Rarity: Rare Cost: {R}{R} Take an extra turn after this one

Destroy target nonland permanent with converted mana cost 3 or less

Set: Planeshift Type: Legendary Creature — Minotaur Warrior Rarity: Rare Cost: {3}{R}{R} Vigilance

a Cylian elf seeks the guidance of a visionary to learn the will of the gargantuan ancients