Disgruntled Bullfrog

Disgruntled Bullfrog must block a red creature each combat if able. If it does, it gets +2/+2 until end of turn.
{r}: Disgruntled Bullfrog gets +1/+1 and
gains haste and trample until end of turn.
It has the strength of a bull,
and the killer-instinct of a frog.