Venusaur

Evolve {4}{g}, put Venusaur on target Ivysaur you control.
Chlorophyll. (At the beginning of your upkeep, flip a
coin. If heads, Venusaur gains vigilance until end of
turn.)
Mega {5}{g}, Venusaur gets a +3/+3 counter and Trample for 3 turns. Only activate once.
{4}{g}, Solar Beam, deal 5 damage to target
creature. Tap Venusaur