Technomancer is the workhorse: it enters, mills three, and returns any number of artifact creatures with total mana value six or less straight to the battlefield, so one card can rebuild half a board
You get a 9/9 trampler, amass 5, mill some cards, reanimate a creature, and get a ring-tempting bonus
Yawgmoth's Will was the OG version and was played heavily in Storm decks, allowing you to replay all your rituals to increase your Storm count before killing your opponent with Tendrils of Agony
The only problem was if you remember, the booster packs to expand your decks cost a small fortune
Move Flanking Licid onto target creature
I think it hangs up there with the best of them, really solid card