{T}: Add {G}.

As long as there are four or more card types among cards exiled with this creature, it gets +4/+4 and has trample. {1}: Exile target card from a graveyard.

{T}: Add {G}.

Trample When Old-Growth Troll dies, if it was a creature, return it to the battlefield. It's an Aura enchantment with enchant Forest you control and "Enchanted Forest has '{T}: Add {G}{G}' and '{1}, {T}, Sacrifice this land: Create a tapped 4/4 green Troll Warrior creature token with trample.'"

Tap another untapped creature you control: Tyvar gains indestructible until end of turn. Tap it. {3}{G}{G}: Creatures you control get +X/+X until end of turn, where X is the greatest power among creatures you control.

Reach Cycling {X}{G}{G} ({X}{G}{G}, Discard this card: Draw a card.) When you cycle this card, destroy up to one target artifact or enchantment with mana value X.

Target creature gets +X/+X until end of turn, where X is your devotion to green. (Each {G} in the mana costs of permanents you control counts toward your devotion to green.)

({T}: Add {G}.)

If you control two or more other lands, this land enters tapped. {T}: Add {G}. {X}{G}: Until end of turn, this land becomes an X/X green Hydra creature. It's still a land. X can't be 0.