M.O.A.B.

{6}{t}: Sacrifice M.O.A.B., destroy target permanent and add {r}{r}{r}{e}{e}{e}
{t}: Put a time counter on M.O.A.B., then if
it has 4 or more time counters on it, sacrifice M.O.A.B. to destroy target permanent and add {r}{r}{r}{e}{e}{e}