Cast Searing Touch with buyback by paying . Storm-Kiln Artist, Blood Funnel and Deekah trigger.
Resolve the Storm-Kiln Artist trigger, creating a Treasure token.
Activate the Treasure by tapping and sacrificing it, adding .
Resolve the Deekah trigger, creating a creature token.
Resolve the Blood Funnel trigger, causing you to sacrifice the creature token.
Resolve the Searing Touch spell.
Repeat.
This delightful loop turns the modest burn spell Searing Touch into an engine of absolute chaos by stacking cost reductions and magecraft payoffs. Thanks to Blood Funnel and Memory Crystal working together, the buyback cost of Searing Touch is completely wiped out, letting you cast it for a single red mana over and over. Each time you cast it, Storm-Kiln Artist and Deekah, Fractal Theorist trigger off magecraft: Storm-Kiln Artist provides the Treasure needed to pay for the spell, while Deekah generates the sacrificial creature required by Blood Funnel's counter-spell clause.