Walking Ballista, meanwhile, lets you turn +1/+1 counters into damage
We pick up Dack Fayden (RIP), Saheeli, Sublime Artificer (THIS CARD IS BANANAS), Saheeli, the Gifted, Saheeli Rai, Daretti, Ingenious Iconoclast, Daretti, Scrap Savant, and pair that up with blue/black artifact planeswalkers like Tezzeret, Artifice Master and holy moly Tezzeret, Master of the Bridge
There are a lot of really interesting cards in Crimson Vow
Even more than most group hug cards you are going to struggle to break symmetry with this, and handing out that much free mana to the table while being the last to take advantage of it is practically begging to get bodied
One of the keys to doing that is creating spells to fill roles usually filled by noncreature spells, things like creature removal and card draw
A deck box and life counter to add to that pile of junk you keep accumulating