Ygra, Eater of All is an interesting sacrifice enabler, in that it makes all creatures Food, so any player can sacrifice a creature and gain life
Actually, this is even a TCG that you can play alone the app offers CPU fights where you can take as much time as you want, do something else in between, and even if you have to close the app mid-duel, it resumes right where you left off
Eagle of Deliverance bulk There are blessed few ways to put an indestructible counter onto a creature in these three colors, and the Eagle is an expensive but useful way to do it
In addition to the wrath spells and indestructible creatures, there are about a dozen mana acceleration spells to help you start using your wrath effects quickly (mostly green spells to fetch your other lands, as many of the mana acceleration artifacts would die to your other spells)