Add Burn +2 to the creature. 2 damage to each God.
Sharpen each other’s life, and add Burn +2 to the opponent’s creature (also friendly).
This is a great match for “Avatar of Death”.
It may be interesting to make a deck that directly cuts your life around this Soul Burn Cards that damage your Gods
There are a lot of cards that can damage your Gods, but we will pick up some of them that are particularly easy to use and match with “Avatar of Death”.
“Brimstone”

1 mana 2 damage to each other's God. 1 draw
“Dangerous Ritual”

2 mana 4 damage to each God. 1 draw
“Brimstone” and “Dangerous Ritual” are spells that have almost the same effect, but with different costs and damage. You can draw one, and not only you but also your opponent’s God will be damaged, so it will be very convenient. One of the attractions is the low cost.
「Ray of Disintegration」

Destroy 5 Mana creatures. 2 damage to your God
A card with 2 damage to your own God, but you can destroy 1 creature.
Summary
There are many cards that can damage your God, but what you need to be aware of is that you can immediately take damage.
In the case of creatures, afterlife may take a turn from summoning to triggering, Spell and Roar will instantly give you the “Avatar of Death” Strength.
It is also possible to raise the strength of “Avatar of Death” while sharpening each other’s lives at once.
I hope you find this article helpful.