Vulthuryol

{1}{u}{r}: Put this card onto the battlefield phased
out. This does not trigger 'enter the battlefield'
effects. Put 1 'Ancient' counter on Vulthuryol on
each of your end steps.
{x}: Pay X mana equal to the number of Ancient counters on Vulthuryol, then Vulthuryol phases in
with X +1/+1 counters. If X is 5 or more,
Vulthuryol gains Flying, Trample and Menace.