Kakashi, the Copycat Ninja

Genjutsu 1 (At the beginning of combat on
your turn, you may discard up to 1 card. If you
do, for each card discarded this way, up to 1 target creature can't block this turn.)
Haste
Each combat, at the end of the declare attackers step, Kakashi gains all abilities of target attacking creature until end of turn.