Ponix + Rangbali
Opening Fire King Avatar Rangbali gives you access to a new endboard, Promethean Princess, Bestower of Flames backed up by Rangbali. Arguably, Rangbali's Spell/Trap negate is generally weaker than Fire King Avatar Arvata's monster negate, but that doesn't make this board bad by any means.
We don't recommend extending with Ulcanix or High Kirin here - instead, go for Arvata - that sets it up in the GY to be revived during your opponent's turn by a Fire King High Avatar Kirin destroyed from your Deck, for a surprise monster negate.
Let's see the combo in action:
This combo plays into Nibiru, the Primal Being - be careful!
Under Mulcharmy Fuwalos, your opponent draws 1 card.
Steps
- Normal Summon Legendary Fire King Ponix.
- Activate Ponix - add Fire King Sanctuary from Deck.
- Activate Sanctuary - place Fire King Island in Field Zone.
- Activate Island - destroy Fire King Avatar Rangbali in hand, add Sacred Fire King Garunix from Deck.
- Activate Sacred in hand - Special Summon it to the field.
- Activate Sacred on field - destroy Fire King Avatar Arvata from Deck.
- Activate Arvata in GY - Special Summon Rangbali from GY.
- Link Summon Promethean Princess, Bestower of Flames.
- Activate Princess - Special Summon Rangbali (again) from GY.
Alternatively you can still set up Princess + Arvata, and have Rangbali wait in the GY to be revived later.