Woodcaller Automaton

Use Woodcaller Automaton's power and toughness at the time its triggered ability resolves to determine the base power and toughness of the Treefolk creature land. If Woodcaller Automaton is no longer on the battlefield, use the power and toughness it had the last time it was on the battlefield.

A prototype card is a colorless card in every zone except the stack or the battlefield, as well as while on the stack or the battlefield if not cast as a prototyped spell. Ignore its alternative characteristics in those cases. For example, while it's in your graveyard, Blitz Automaton is a colorless creature card with mana value 7. It can't be the target of Recommission, a spell that targets an artifact or creature card with mana value 3 or less in your graveyard.

Regardless of how it was cast, a prototype card always has the same name, abilities, types, and so on. Only the mana cost, mana value, color, power, and toughness change depending on whether the card was cast as a prototyped spell.