Terex P.O.W

Haste, Vigilance
{1} Add a +1/+0 or a +0/+1 counter to Terex
{4} Create a Handcuff token
Whenever Terex P.O.W attacks, target player
discards X cards Were X is the amount of creatures
attacking this turn
{b}{b}{g}{w}{x} transform Terex P.O.W add X
+1/+1 counters to it