Kindred, Eternal Hunters

At the beginning of your upkeep put a Mark of
the Kindred onto a random creature each player controls, If a player controls no creatures, instead
put a Mark of the Kindred counter on them.
Whenever a creature would be destroyed, if it
doesn't have a Mark of the Kindred Counter,
put a +1/+1 counter on Kindred and it gains
indestructible until end of turn.
Players can't lose the game unless they have a
Mark of the Kindred counter.