Ydwen Efreet [Arabian Nights] Halfling Horror Whenever Goreclaw

Whenever Goreclaw

you may pay 0 rather than pay the mana cost for a spell you cast with converted mana cost X or less

Set: Oversize Cards Rarity: Rare 1G: Choose a card in your hand

Whenever another Elf enters the battlefield under your control

Set: Secret Lair Drop Series Type: Instant Rarity: Rare Cost: {1}{U} Target player mills three cards

Ydwen Efreet [Arabian Nights] Halfling Horror Whenever GoreclawSet: 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.