You just need Necroforager

Necroforager's innate ability is Recycling triggers Summon abilities and Summoning triggers Recycling abilities.

Necroforager starts with a Blood Orange guaranteed in your left-most slot in your store. Instantly recycling it will give you 3 skulls, which is enough to reroll and buy it again. Repeat this until there's two Blood Oranges in your store then sell both for profit. Continue doing this however many times you like for however many skulls you want.

I recommend perfecting minions for the level 3 spells as some work well with this strategy.
For example:
Augury:( Quest:Recycle 4 minions Reward: Increase your magic mastery by 1 permanently, then reset this quest) infinite magic mastery + Highly recommend getting the Ancestral Scholar support and Mirror Advisor relic when playing with this spell.
Birth From Blood:( Whenever you recycle a minion, add a higher level minion to the shop.) this makes it so you can get the level 4 minion that gives xp on summon.
Interchangeable Parts:( Whenever you recycle a minion, give a minion related to it +2/+1 Permanently.) good if you're using mushrooms or ferals



After an hour and a half:


Still couldn't beat my best even with cheap tactics