Mystic Remora (Retro) [Dominaria Remastered] EVR037 put a shield counter on

put a shield counter on target attacking creature

the Mind Flail isn't a creature unless you control three or more permanents you don't own

Set: Dominaria United Commander Type: Legendary Artifact Rarity: Uncommon Cost: {3} Red creature spells you cast cost {1} less to cast

Set: Darksteel Promos Type: Legendary Artifact — Equipment Rarity: Rare Cost: {4} Equipment named Sword of Kaldra

Mystic Remora (Retro) [Dominaria Remastered] EVR037 put a shield counter onSet: Dominaria Remastered Type: Enchantment Rarity: Rare 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.