Watcher of the woods

Changeling
{x}{u}{t}Target creature with mana value equal to or
less than X becomes a copy of this creature.
{x}{x}{b}{t}destroy target creature an opponent controls with power less than to equal to X.
{x}{x}{x}{u}{b}{g} Reveal X cards in target player hand, they discard those cards. You choose the cards while they are not revealed.(The cards that you choose are the ones going ot be revealed)