Ydwen Efreet [Arabian Nights] SM156 " When you do

" When you do

Set: Betrayers of Kamigawa Type: Instant — Arcane Rarity: Rare Cost: {X}{B}{B} You may exile a black card with mana value X from your hand rather than pay this spell's mana cost

Whenever a creature with power 4 or greater enters the battlefield under your control

Set: Legends Type: Sorcery Rarity: Common Cost: {R} Chain Lightning deals 3 damage to any target

Set: EX: Power Keepers Type: Lightning Rarity: Holo Rare Retreat cost: Colorless

Ydwen Efreet [Arabian Nights] SM156 " When you doSet: Arabian Nights Type: Creature Efreet Rarity: Rare Cost: {R}{R}{R} Whenever Ydwen Efreet blocks, flip a coin. If you lose the flip, remove Ydwen Efreet from combat and it can't block this turn. Creatures it was blocking that had become blocked by only Ydwen Efreet this combat become unblocked.