Chisal, Arbiter Of Continuum

All players role a die, you can not cast
Chisal unless all players role 10 or higher.
Cumulative upkeep {1}
{2}{p/r}{p/g}, each player takes an extra turn after their next turn, untap.
During an extra turn, player may role a die,
if 15 or higher he/she may cast a card from their hand or graveyard for free.