Nissa of Shadowed Boughs

A landfall ability triggers whenever a land you control enters for any reason. It triggers whenever you play a land, as well as whenever a spell or ability puts a land onto the battlefield under your control.

Whenever a land you control enters, each landfall ability of the permanents you control will trigger. You can put them   on the stack in any order. The last ability you put on the stack will be the first one to resolve (As a result, you can have those abilities resolve in the order of your choosing.).

A landfall ability doesn't trigger if a permanent already on the battlefield becomes a land.

Nissa's middle ability can target a land that's already untapped or that's already a creature.

The creature card's mana value is checked only in your hand or graveyard. You may put a creature card onto the battlefield whose mana value becomes greater than the number of lands you control once it's on the battlefield, most likely because it enters as a copy of another permanent.

If a card in a player's hand or graveyard has {X} in its mana cost, X is considered to be 0.