Silverclad Ferocidons (Promo Pack) [Rivals of Ixalan Promos] Vampire Ally Whenever Xantid Swarm attacks

Whenever Xantid Swarm attacks

Set: Collectors' Edition Type: Creature — Elemental Rarity: Rare Cost: {2}{G}{G}{G}{G} Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking

and you may spend mana as though it were mana of any type to cast those spells

Set: Duel Decks: Speed vs

Tap three untapped Merfolk you control: Draw a card

Silverclad Ferocidons (Promo Pack) [Rivals of Ixalan Promos] Vampire Ally Whenever Xantid Swarm attacksSet: Rivals of Ixalan Promos Type: Creature Dinosaur Rarity: Rare Cost: {5}{R}{R} Enrage Whenever Silverclad Ferocidons is dealt damage, each opponent sacrifices a permanent. "Control them? No. I gird them in armor and let them loose." Yacha, Otepec huntmaster