Destroy that creature at the beginning of the next end step. The ability will destroy the object it gave +2/+2 to even if that object isnt a creature at the beginning of the next end step
This combines with everything else on the list to make for a big old Creature that is absolutely going to mess up anything it attacks
Sephiroth, Fabled SOLDIER / Sephiroth, One-Winged Angel Death triggers and life loss go hand in hand, and they rarely look better than on Sephiroth, Fabled SOLDIER
In most cases, this just meant adding more cards to the list, but in some cases in The Return of the King starters they also removed cards in a rebalancing attempt
It was actually played in Vintage at some point, seeing as you could wreck opponents powerful mana rocks whenever the Predator hits
Slightly less worse than that is someone outside the social media sphere opening it and either not realizing its worth, or just selling it privately without any fanfare