Firemind's Research [Guilds of Ravnica Prerelease Promos] Thrull put them into their owner's

put them into their owner's graveyard

The next time one or more enchantment creatures enter the battlefield under your control this turn

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create two 2/2 green Cat creature tokens

Reverse Type: Legendary Land — Cave (Transforms from Brass's Tunnel-Grinder

Firemind's Research [Guilds of Ravnica Prerelease Promos] Thrull put them into their owner'sSet: Guilds of Ravnica Prerelease Promos Type: Enchantment Rarity: Rare Cost: {U}{R} Whenever you cast an instant or sorcery spell, put a charge counter on Firemind's Research. {1}{U}, Remove two charge counters from Firemind's Research: Draw a card. {1}{R}, Remove five charge counters from Firemind's Research: It deals 5 damage to any target.