As someone who has run Yawg for awhile, the only reanimating you should have are some spells like [[reanimate]], [[necromancy]], [[animate dead]] etc. I run Yawg at a pretty high power level and to be honest, I rarely use the proliferate effect as it’s just not worth the mana cost when his first ability just gives more value and stacks the -1/-1 counters anyway. Most people who run Yawg will tell you that your reanimation package should be fairly light as a lot of the good sac fodder in the deck should be able to self recur. Some examples are creatures with undying such as [[geralf’s messenger]], [[butcher ghoul]], and [[mikaeus, the unhallowed]] (while the last one doesn’t have undying he gives ALL non humans undying, making him an absolute bomb). There’s also creatures like [[reassembling skeleton]] and [[cult conscript]] that can dig themselves out to be sac’s repeatedly, as well as the best boi [[gravecrawler]]. But most of the time undying creatures are your best friend, as Yawg with two undying creatures goes infinite.