Cheaper Ways of Casting Expensive Stuff : There are ways to get more expensive dorks into the graveyard to reload, like the aforementioned cycling or something like Mulldrifter's evoke that can be cast on the third turn and will be in the graveyard easily
When you have two very different IPs with their own worldbuilding and lore, conflicts like these are almost inevitable
Creature - Angel Color tag templates(None) Lyra Dawnbringer Flying First strike (This creature deals combat damage before creatures without first strike.) Lifelink (Damage dealt by this creature also causes you to gain that much life.) Other Angels you control get +1/+1 and have lifelink
Both brands love crystal lore, elemental icons, and sweeping job systems
Ygra, Eater of All Ygra, Eater of All is a 5-drop kitty with a 6/6 Golgari body and Ward - Sacrifice a Food
They work as mana sources and become excellent Eldritch Evolution targets to grab one of your many different stax pieces