The Time Stone

Indestructible, equip {2}
When this ETBs, you may exile target creature
or enchantment and put 2 plus X time counters
on it where X is Assemble. It gains suspend.
Equipped creature gets +1/+1 for each suspended
card in play and has {t}: add or remove a time
counter from target suspended card.
At EOT, exile equipped creature if non-legendary.