Fortunately, Teferi can also make illusions that can grow big very quickly
The combination of card advantage and pressure makes it a potent threat, the synergy with cascade makes it a combo card, and exiling cards generally makes it a strong combo piece
On the occasions when we cared about having an Active Pokemon and a set of Bench Pokemon, we decided one switch per turn would be fair, though sometimes we haggled to bring it up to two when it suited our cause
But there was a problem in that many of them didnt have art, and Im kind of a fan of that stuff, so this was always disappointing
I don't think it's an oppressive card
There are a few cards that dont follow this return clause in my rankings, but theyre included because they have the same end result as traditional reanimation