Chamber Sentry [Guilds of Ravnica] Fish Beast put Cogwork Librarian into that

put Cogwork Librarian into that booster pack

Set: Fifth Edition Type: Artifact Rarity: Uncommon Cost: {1} Whenever a player casts a green spell

target creature gains trample and gets +X/+X

"When in doubt

Gatha struggled to keep his experiments in and his patrons out

Chamber Sentry [Guilds of Ravnica] Fish Beast put Cogwork Librarian into thatSet: Guilds of Ravnica Type: Artifact Creature Construct Rarity: Rare Cost: {X} Chamber Sentry enters the battlefield with a +1 +1 counter on it for each color of mana spent to cast it. {X}, {T}, Remove X +1 +1 counters from Chamber Sentry: It deals X damage to any target. {W}{U}{B}{R}{G}: Return Chamber Sentry from your graveyard to your hand.