mtg cards with persist Obligatory new +1/+1 counter mechanic card. : r/custommagic 1 counter on it Ask a Magic Judge —

But regrettably doesnt give me access to blue or black, Kambul, Consul of Allocation punishing opponents for casting noncreature spells really like it

You can likely set up some powerful loops using Extus alongside cards like Ardent Elementalist to get spells and Ashnod's Altar to send the Elementalist to the graveyard

You can keep pumping out resources turn after turn, but be aware that if you start getting low on life, there's not much you can do to stop it with Black Market Connections since it is guaranteed to trigger at the top of each turn

Inexorable Tide allows you to proliferate every time you cast a spell