It isnt really broken, but it changes up the pace of the game to allow a unique and consistent form of ramp for green
10 Aerith Gainsborough The Flower That Started It All Your first introduction to Aierith Gainsborough in Final Fantasy 7 is as a mysterious flower peddler holding the yellow lily in hand in the slums of Midgar
The Amulet deck remained top tier even after various bans Summer Bloom, Once Upon a Time, Field of the Dead and its all due to this sick six drop creature
But the Challenger +2 is not going to be super relevant much of the time, so unless you have other action synergies going on, this card isn't going to be worth a spot
This execution resembled Saga creatures, which inspired exploring those
In the end most decks ended up eschewing Infiltrator for another identically costed card that was indisputably more powerful and important, since having two creatures in that slot would have been highly awkward for many draws