Blazing Cerberus

Discard X cards: Riled X (If this creature has
no +1/+1 counters on it, put X +1/+1 counters on
it and it deals damage equal to its power to another target creature.)
Whenever one or more +1/+1 counters are
put on Blazing Hellhound, it gains trample
and menace until end of turn.