This Sheoldred is one of those generally good cards, but it can work especially well in decks that fill your own deck with cards, giving you lots of creatures to choose from for reanimation
This can then be used in combination with Underworld Breach and Lion's Eye Diamond after storming Brain Freeze, but it can also find success with a Food Chain combo or the usual Thassa's Oracle + Demonic Consultation
Note that the beginning of upkeep triggered ability doesnt target the creature, meaning we can put it on one with shroud if we like
Its overloaded effect is insane, and exactly what you need to maximize other, cheaper goad effects
14 Mad Hatter - Unruly Eccentric Card 213/204 EN.7, Emerald/Ruby Dual Ink Alice in Wonderland 's iconic Mad Hatter not only makes an appearance, but mixes things up as one of the cards in Archazia's Island to feature the new dual-ink card mechanic