Hospitable Bunny

When Hospitable Bunny enters the
battlefield, Create a 5/5 white bunny
beast creature token with trample and
vigilance. Then, you gain X bunny counters,
where X is the amount of times you've cast
a creature spell with converted mana cost 4 or
greater.
{t}, Remove four bunny counters: Create a
2/2 bunny baby creature token with
"{t}:Draw a card, then you discard a card.