Soldier 76

First strike, indestructible.
{w}{r}: biotic field: creatures you control have +0/+2 until end of turn
{u}{r}{1}: helix rockets: soldier deals 3 combat damage to target creature and/or player.
Whenever soldier attack, after the opponent chooses to block soldier you may pay {u}{1}: if you do so, you choose who block soldier 76.