Warren Instigator [Secret Lair Drop Series] IDW Comics 2014 if that spell's mana cost

if that spell's mana cost or that ability's activation cost contains {X}

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Set: Limited Edition Beta Type: Creature — Wall Uncommon Cost: {1}{U}{U} Defender (This creature can't attack

you gain 1 life for each card in your hand

Set: Antiquities Type: Artifact Creature — Bird Rare Cost: {5} Flying Clockwork Avian enters the battlefield with four +1/+0 counters on it

Warren Instigator [Secret Lair Drop Series] IDW Comics 2014 if that spell's mana costSet: Secret Lair Drop Series Type: Creature Goblin Berserker Rarity: Mythic Cost: {R}{R} Double strike Whenever Warren Instigator deals damage to an opponent, you may put a Goblin creature card from your hand onto the battlefield.