Blood Funnel + Memory Crystal + Seething Anger + Hermes, Overseer of Elpis + Electro, Assaulting Battery

Blood Funnel

Memory Crystal

Seething Anger

Hermes, Overseer of Elpis

Electro, Assaulting Battery

How it works

1. Cast Seething Anger with buyback by paying . Electro, Blood Funnel and Hermes trigger.
2. Resolve the Electro trigger, adding .
3. Resolve the Hermes trigger, creating a creature token.
4. Resolve the Blood Funnel trigger, causing you to sacrifice the creature token.
5. Resolve the Seething Anger spell.
6. Repeat.

This clever storm engine revolves around using Seething Anger as a recurring noncreature spell, whose buyback cost is completely offset by Memory Crystal reducing that buyback by {2} while Blood Funnel lowers the initial casting cost by {2}. Because you are casting a spell, Hermes, Overseer of Elpis steps in to constantly replenish your board with a fresh 1/1 Bird token to satisfy Blood Funnel's sacrifice requirement. Meanwhile, Electro, Assaulting Battery generates a net-positive mana loop by floating red mana on every cast while letting you retain unspent red mana through phases, enabling an infinite loop of powerful triggers that culminates in infinitely large creatures until end of turn.