That would inevitably lead to me playing Opalescence and then finding some level 1 judge and asking them to explain the interaction to me
There are infinite combos that outright win you the game, like with Walking Ballista, but Heliod can be a centerpiece of devotion decks, +1/+1 counters, lifegain decks, and enchantment-based decks
Hes really not strong enough to warrant such a high cost, but when you have games where you struggle to get Deserts in the yard, his absence is really felt
Its expensive because it was only printed in Alpha , Beta , Unlimited , and an old From the Vault set
So, running Unholy Annex // Ritual Chamber , a Room Enchantment, to add more card draw never hurt, and the best part is that Valgavoth is a demon and can immediately take advantage of the the Unholy Annex side