Blank Slate of Muraganda

Flash, Split second
{t}, Sacrifice blank slate of Muraganda: other nonland permanents lose all abilities until end of turn and creatures get -X/-X until end of turn, where X is the number of +1/+1 counters on them.
{2}, exile blank slate of muraganda from your graveyard; you may cast target creature card in your graveyard this turn as if it had flash.