The kicker, though, is that youre playing blue
It pops up in Modern from time to time alongside Goryo's Vengeance, but its primary home is in Legacy, with decks like Sneak and Show and Reanimator abound
For example, a creature that's put into a graveyard and then ceases to exist still triggers "Whenever a creature dies" abilities
Similarly, if all of the attacking player's other opponents leave the game before Suppressor Skyguard's last ability resolves, the condition will no longer be true when the ability tries to resolve, the ability won't resolve, and damage won't be prevented
In fact, all the others have come from the other D&D tie-in release, Adventures in the Forgotten Realms
While you risk losing your creatures when Chainer dies, this also acts as graveyard hate if youve reanimated any of your opponents creatures