By the way, in the end, that’s exactly what will happen in the game if you just keep waiting. In battle, a round counter ticks down for all creatures (like for clones), but by default, it’s set to the highest possible value for regular creatures. Therefore, on the 2^32 round, all creatures on the battlefield (that have been there since the beginning of the battle) will die.
Well, that’s fine, and it doesn’t take long to wait. If it takes one second per round, it’s only 136 years :D