Ramp : Ancient Tomb, Sol Ring, Mana Crypt, Mana Vault, Gauntlet of Might, Gauntlet of Power, Extraplanar Lens, Solemn Simulacrum (I'm surprised this card is still expensive despite all the reprints!) Card Draw: Wheel of Fortune, Mind's Eye, Knollspine Dragon Tutors: Gamble, Moggcatcher, Imperial Recruiter Hate: Blood Moon, Magus of the Moon, Stranglehold, Pyroblast, Red Elemental Blast Goblins: Goblin Recruiter, Goblin Ringleader, Kiki-Jiki, Mirror Breaker, Goblin Warchief, Lightning Crafter Kiki-Jiki, Mirror Breaker and Lightning Crafter is an infinite combo
It's not an exact science, but it's undoubtedly true for Agatha's Soul Cauldron, which has a borderless version worth a couple of bucks more than the original
It makes your Voltron creature much more annoying to get rid of as it recurs itself at the end of the turn
Both are sorcery and both have limitations, the Slight is simply the least digging and the least options of all the cards and really needs to be instant