Rezan, Nature's Prism

At the beginning of each end step, you may draw
a card if a player or planeswalker was dealt
damage by a creature token this turn.
{g}{u}: Target creature gains myriad until end of
turn. (Whenever this creature attacks, for each
opponent, you may create a token that's a copy of this creature that's tapped and attacking that player or a planeswalker they control. Exile the tokens at the end
of combat.)
Partner (You may have two commanders if they both
have partner.)