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Pokemon foil vs holo is one of those questions that sounds embarrassingly simple until you start shopping singles and every seller, binder label, and marketplace filter uses slightly different words
Other suggestions: Ones that work somewhat with the life drain: Defiant Bloodlord , Retreat to Hagra , Thrull Parasite , Bontu's Monument , Kambal, Consul of Allocation , Underworld Coinsmith (this would be a reason to keep Heliod, actually), Zulaport Cutthroat , and maybe Vizkopa Confessor Others that pay life or give you life somehow: Arguel's Blood Fast Flip , Chainer, Dementia Master , Cruel Sadist , Phyrexian Reclamation , Vona, Butcher of Magan , and Elenda, the Dusk Rose (for working with your creatures dying)
Tough, but fair
Special Summon 1 Level 4 or lower "Dinomorphia" monster from your GY, except "Dinomorphia Diplos"
You can even draw every single land from your deck and play them all if you have Abundance on the field when you play this, but it can be risky if one of your opponents is running mass land destruction