This ability is powerful because you can draw an additional six cards in three turns, and that is very good card advantage
Lead the way: How to build a MTG Commander deck It's basically a free extra creature, a solid 4/3 beater that can pop out of its little hidey hole to swing for decent damage
Ragavan FTW: These are the best cards in Modern Horizons 2 The flipside of this is Tovolar, the Midnight Scourge - a 4/4 that still lets you draw cards, but also allows you to pay X, one Red, and one Green, to give a Wolf or Werewolf you control +X/+0 and Trample until the end of the turn
The most common speculations involved Class cards, but we had something different in mind: Equipment
Instead, the hexproof creature will just be dealt damage normally and be destroyed as a result
Transplant Theorist Transplant Theorist offers the artifact-heavy deck a way to see many extra cards