Mass of Mysteries (Borderless)

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Card Text

First strike, vigilance, trample <br>At the beginning of combat on your turn, another target Elemental you control gains myriad until end of turn. <em>(Whenever it attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)</em>