Reckless Wurm [Mystery Booster] Siren you may put Gate Colossus

you may put Gate Colossus from your graveyard on top of your library

"The hermit dies

"The infection has spread farther than we could glimpse from the heights of Taj-Nar

Set: Onslaught Type: Creature — Zombie Giant Rarity: Rare Cost: {3}{B}{B} Tap three untapped Clerics you control: Return Gangrenous Goliath from your graveyard to your hand

Reckless Wurm [Mystery Booster] Siren you may put Gate ColossusSet: Mystery Booster Type: Creature Wurm Rarity: Common Cost: {3}{R}{R} Trample Madness {2}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.) Bred for battle in the Grand Coliseum, these wurms annihilated whole ecosystems when released into the wild.