Ultimate Echo Echo

First Strike, Hexproof
Sonic Disc Barrage {2}{u}{u}- Ultimate Echo Echo
deals damage to target creature or player equal to
the number of cards in your hand.
Cumulative Upkeep {1}- Transform to Echo Echo,
Sonic Resonator
"A symphony of echoes, each resonating with the force
of a sonic storm. Ultimate Echo Echo heralds the
arrival of overwhelming power."