Mystic Remora [Ice Age] Unlimited Edition and Popplio

and Popplio

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You may cast that card without paying its mana cost

Set: Commander 2014 Type: Instant Rare Cost: {1}{U} Return target nonland permanent you don't control to its owner's hand

Set: Magic Player Rewards 2006 Type: Instant Rare Cost: {R}{W} Lightning Helix deals 3 damage to any target and you gain 3 life

Mystic Remora [Ice Age] Unlimited Edition and PopplioSet: Ice Age Type: Enchantment Common Cost: {U} Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays {4}.