Ulgrov, Forest's Vengence

X: Gain X loyalty where X is the number of tapped forests your opponents control.
-2: Return up to 2 target forests from a graveyard to the battlefield under your control. They're no longer forests, they're 1/1 elemental tokens.
-8: Spend all {g} in your pool. Create 1/1 elemental tokens for each {g} spent this way.