Just five simple words is enough to blow out the table: End of turn, Cyclonic Rift. Infamy aside, Rift is a staple because its the best at what it does: bouncing all of your opponents nonland permanents at instant speed
It also grants you protection from everything until your next turn when it enters the battlefield, which makes it a good target for blink effects that can trigger that multiple times
Its abilities make enough sense
This multiplicative effect provides an endless supply of sacrifice fodder for his activated ability, which allows you to sacrifice Squirrels to give a creature +X/-X
Once a case is solved it stays solved until it leaves the battlefield
Gix, Yawgmoth Praetor While not many people use Gix, Yawgmoth Praetors second ability, its there for when you want to discard a handful of lands and, in turn, play free spells from your opponents side