Cloyster (42/165) [Expedition: Base Set] Psychic[-30] where X is the number

where X is the number of artifacts and enchantments your opponents control

Set: Archenemy Type: Creature — Human Spellshaper Rarity: Common Cost: {2}{B} {B}

Target creature gains trample and gets +X/+0 until end of turn

Set: International Collectors' Edition Type: Instant Rarity: Rare Cost: {U} Target spell or permanent becomes blue

Set: Unlimited Edition Type: Creature — Hydra Rarity: Rare Cost: {X}{R}{R} Rock Hydra enters the battlefield with X +1/+1 counters on it

Cloyster (42/165) [Expedition: Base Set] Psychic[-30] where X is the numberSet: Expedition: Base Set Type: Water Rarity: Rare Retreat cost: Colorless,Colorless