One good swing can instantly reshape the board in your favor
The gimmick around Nazahn and Hammer of Nazahn is also very compelling, making the template for an equipment minded deck that will often circumvent equip costs
Because of this, it's almost like we did four different Universes Beyond products in one
But this equipment is super useful in fairer decks that use the Bracers to double up good effects like those on Orthion, Hero of Lavabrink, Feldon of the Third Path, Alaundo the Seer, Dynaheir, Invoker Adept, etc
On the other side, the ceiling does seem high as well, after all you can create a 2 mana 6/6 with this common - and that kind of tempo swing is difficult to beat
When they are in other colors, they gain a few abilities from them, such as recursion and hopping counters