SagGYfice

Yeah, ANOTHER GY Sac list "Ugh, boring..." I know, and I agree, however, I'm inclined to say mine has a few different things you won't see everywhere \o/

Soul Eaters and bone collectors are NOT swappable. These two cards will be in any GY Sac list you can think of.

The real fun stuff:

Seed of Paradise proved to be AMAZING when it comes to a GY Sac list, simply because it's land acceleration AND Soul Eater ramping. It's just FANTASTIC. If you manage to find a seed of paradise, you MUST keep it.

Ruunin is here just because of how reliable she is, you can force ruunin as an offensive creature as early as turn 2 with this deck. (Forest + Seed of paradise >> Forest + Ruunin) Again, seed is AMAZING.

I added Soul drains in order to have some minor healing and "maybe" sac something. Say you're playing against burn, and there's no creatures on board - drain a village elder or a bloomsprite! You should try and force it as removal as opposed to sac though, as it's much better to take out enemy tokens.

Lord of the Wastes was a card I initially didn't like much, but it is a force to be reckoned with, and if you can sac a Wind Soldier/Village Elder/Bloomsprite, it gets SO MUCH value. It's a lot sturdier now, with it's 4 hp, which means it can bust through some heavy taunts like grim guard and living willow and still be up for another turn!

Ideal Mulligans -
#1 Seed of Paradise + Ruunin
#2 Bone Collector + Village Elder/Bloomsprite
#3 Demon Wrangler + Village Elder/Bloomsprite

Some things to consider:

If you feel there's not enough removal here, swap Soul Drains or Lord of the Wastes for Shaytan Assassins.

If you intend to add Doomgate, I'd keep Ruunin, as she allows for repeated sacrificing, make sure she trades and lives with 1 hp, then you're good to go.

Spirit of Rebirth? You can fit it in, sure. I just don't like it a lot, as it can slow down how I sac things.

Finally: have fun! And enjoy crushing people with this awesome deck :D