Tighnari, Forest Watcher

Tighnari's Power is base on the number of Forests you control
{3}{g}{g} Tighnari deals damage to target based off his power rounded down
{g}{g}{g}{t} Target Creature you control gains Trample until the end of turn
{t} Add {g}{g} to your mana pool Tighnari doesn't untap until your next untap step