River Boa [Mystery Booster] !/28 Set: Black & White: Dark

Set: Black & White: Dark Explorers Type: Fire Rarity: Uncommon Retreat cost: Colorless

Set: March of the Machine Promos Type: Legendary Creature — Phyrexian Elemental Rarity: Rare Cost: {W}{U}{B/P}{R}{G} If you would lose unspent mana

Set: Jumpstart 2022 Type: Artifact Creature — Hydra Rarity: Uncommon Cost: {5} Clockwork Hydra enters the battlefield with four +1/+1 counters on it

create a tapped and attacking token that's a copy of it

River Boa [Mystery Booster] !/28 Set: Black & White: DarkSet: Mystery Booster Type: Creature Snake Rarity: Uncommon Cost: {1}{G} Islandwalk (This creature can't be blocked as long as defending player controls an Island.) {G}: Regenerate River Boa. "Sheath your swords! Cudgels only. I see a new pair of waterproof trek boots slithering away." Nablus, North Hada trapper