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Alloy Myr Alpha Myr Copper Myr Gold Myr Hovermyr Ichorclaw Myr Iron Myr Knighted Myr Leaden Myr Myr Adapter Myr Custodian Myr Enforcer Myr Kinsmith Myr Landshaper Myr Moonvessel Myr Quadropod Myr Retriever Myr Scrapling Myr Servitor Myr Sire Omega Myr Parcel Myr Perilous Myr Sarcomite Myr Silver Myr Suntouched Myr

It grants three attacks to its equipped monster, not two

Supporter rule: You can play only one Supporter card each turn

Imagine getting this out on turn 2 via a Llanowar Elves turn 1 (shout out to the reprint)

Eventually Wrenn will threaten to ultimate if not respected, which nearly always results in winning the game either by having nearly unlimited interaction, or a pile of Lightning Bolts