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It's an instant speed spell with three different modes, for the low mana value of four
being able to get rid of a Dovins Veto or redundant Teferi, Hero of Dominaria versus an aggro deck
Creature Artifact - Warrior Turtle Color tag templates(None) Memnite Creature Artifact - Construct Color tag templates(None) Myr Enforcer Affinity for artifacts (This spell costs less to cast for each artifact you control.) Creature Artifact - Myr Color tag templates(None) Ornithopter Creature Artifact - Thopter Color tag templates(None) Phyrexian Walker Creature Artifact - Construct Phyrexian Color tag templates(None) Sojourner's Companion Affinity for artifacts Artifact landcycling ( , Discard this card: Search your library for an artifact land card, reveal it, put it into your hand, then shuffle.) Creature Artifact - Salamander Color tag templates(None) Thought Monitor Affinity for artifacts (This spell costs less to cast for each artifact you control.) Flying When this creature enters, draw two cards
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I really like that Caesar, Legion's Emperor produces its own sacrifice fodder, so you only need one good card to feed into it before things really get rolling