If youre planning to do this yourself, aiming to Conjure a nine-cost creature is the best bet right now
Yes, Ancestral Mask is very strong, but we only have one in the entire deck, and the rest of the buffs in Pauper are quite weak
Nicol Bolas is certainly the most playable of the OG Elder Dragons
I also suggest you check your card using black light (also known as UV-A light or Woods lamp)
In my experience, the only ones I even consistently look at are Mana Drain and Midnight Clock due to their added utility and universal applications in gameplay
I generally dislike Wizards inclination to reward players for building around a strategy by letting them do it again, but Sanctum of Alls trigger doubler makes short work of your opponents when you have cards like Honden of Infinite Rage aroundwhich the first ability ensures you will