Mortuary + Daxos, Blessed by the Sun + Bolas's Citadel + Fanatical Firebrand

Mortuary

Daxos, Blessed by the Sun

Bolas's Citadel

Fanatical Firebrand

How it works

1. Activate Fanatical Firebrand by tapping and sacrificing it.
2. When Fanatical Firebrand dies, Mortuary and Daxos trigger.
3. Resolve the Mortuary trigger, putting Fanatical Firebrand from your graveyard onto the top of your library.
4. Resolve the Daxos trigger, causing you to gain 1 life
5. Resolve the Fanatical Firebrand ability.
6. Cast Fanatical Firebrand from the top of your library by paying 1 life.
7. When Fanatical Firebrand enters, Daxos triggers, causing you to gain 1 life.
8. Repeat.

This engine turns a humble goblin into an endless loop of pyrotechnics by neatly bypassing traditional mana costs. With Bolas's Citadel sitting on your battlefield, you can cast Fanatical Firebrand directly from the top of your library for a mere 1 life instead of its usual mana cost. Every time the goblin dies to its own activated ability, Mortuary immediately rescues it from the graveyard and places it right back onto the top of your library, ensuring you never run out of ammo. Meanwhile, Daxos, Blessed by the Sun quietly tracks the endless cycle, gaining you life on both entry and exit to comfortably offset the life you spent casting the spell.