You can exile a target Creature, or give the choice over to your opponent to sacrifice an Enchantment they control
This, again, means that spells cost one mana less for each creature you have on the board.
Doubling attack triggers makes it a natural fit for mechanics like mobilize or firebending, where it rewards aggressive decks that want every combat step to generate value
While attached, this isn't a creature.) Creature Artifact - Equipment Cat Pump (CTRL to add secondary) Ramp Ramp (CTRL to add secondary) randoms randoms (CTRL to add secondary) Recursion Forge Anew When this enchantment enters, return target Equipment card from your graveyard to the battlefield
Im not sure if this is better than URs excellent signpost uncommons though, as the floor is definitely lower than something like Shantotto, Tactician Magician
If you were playing other creatures, Steel Golem gave you a good one but it could also cripple you if they could block or otherwise stop it without removing it, and there were several good ways to do that