Isles of isolation

Flash
Cancel any action. Cards that say "This spell cannot be countered" can be countered by this card.
At the beginning of your upkeep, you gain {u}
{x}, pay 5 life: return this card to your hand. X is equal 5 plus the number of times you have this card has entered play.
The third time this card has entered play, exile it.
{10}: sacrifice 5 non-land permanents you own and bring this card from exile to your hand. You lose 5 life.