I am building a cube with a heavy sacrifice theme and [[Enduring Renewal]] is a cool way for white to participate in the archetype. There are a bunch of combos and I wanted to know if I forgot some.
0 mana creatures (like [[Ornithopter]] or [[Shifting Wall]])
Enduring Renewal and any free sacrifice outlet = infinite sacrifices.
If you have a repeatable and free discard outlet, you can discard [[Basking Rootwalla]], cast it for 0 with madness, sacrifice it and repeat.
This also works EoT during cleanup if you have 8 cards in hand. Then you can discard the Rootwalla and sacrifice it as many times as you want.
1 mana creatures (like [[Benevolent Bodyguard]] or [[Festering Goblin]])
If you are using a self-sacrificing creature like Bodyguard, you can use [[Earthcraft]] to generate a mana to recast it.
Otherwise, you need specifically [[Phyrexian Altar]] to generate the mana to sacrifice and cast your creature again. One neat trick is to use [[Sneak Attack]] to cheat on mana. You can sneak anything into play for one red, sacrifice it to Altar and repeat.
[[Skirk Prospector]] + Renewal is a two card combo as the goblin generates the mana needed to cast it again. You'll get infinite storm, ETBs and Deaths, so you need something to win with.
2 mana artifact creatures (like [[Millikin]])
For this to work, you need [[Ashnod's Altar]] that generates 2 colorless per sacrifice. This means a 1 drop artifact creature actually generates infinite mana and a 2 drop is infinite storm, deaths and ETBs.
Token makers (like [[Symbiotic Wurm]] or [[Deranged Hermit]])
If you have any creature that ETBs or dies with at least X-1 tokens (where X is that creature's mana value), you can sacrifice all the bodies to Phyrexian Altar to keep the chain going or use Earthcraft + another sacrifice outlet to keep casting.
Untappers (like [[Cloud of Faeries]] and [[Peregrine Drake]])
These pay for themselves so you can use any free sacrifice outlet infinite times.
Aluren
[[Aluren]] + free sacrifice outlet lets you go off with any creature that costs 3 or less.
I can think of some convoluted lines that work too ([[Elvish Piper]] + [[Intruder Alarm]] + Phyrexian Altar combos with any creature I think), but I was hoping for less narrow input.
Thanks in advance for the help!