Vortex of Strength

At the beginning of the end step, exile Vortex of Strength. Activate each of its abilities only once.
{g}: Target creature gets +6/+6 until the end
of your next turn.
{g}{g}: Creatures you control get +3/+3
until end of turn.
{1}{g}{g}: Search your library for up to three
creature cards and put them into your hand.
{2}{g}{g}: Create eight 1/1 green elf tokens with
"{t}: add {g}"