Calciderm [Eternal Masters] RVD021 they may cast a spell

they may cast a spell from among other cards exiled with Knowledge Pool without paying its mana cost

Flashback {5}{R}{R} (You may cast this card from your graveyard for its flashback cost

hexproof from activated and triggered abilities

redeemed in Gideon’s hand

Whenever one or more other creatures with power 2 or less that enter the battlefield under your control

Calciderm [Eternal Masters] RVD021 they may cast a spellSet: Eternal Masters Type: Creature Beast Rarity: Uncommon Cost: {2}{W}{W} Shroud (This creature can't be the target of spells or abilities.) Vanishing 4 (This creature enters the battlefield with four time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)