Immortality

(indestructible)
equip {p/u}, equipped creature if dead
will come back with +1/-1 this stacks until
the creature has 0 toughness then it dies
(if not equipped and the owner of Immortality
dies they may pay {u}{u}{u}{u}{u}{u} if you
do sacrifice immortality, pick a player
at random they will switch with you, including
life total and permanents controlled.)