From Doctors and companions to Enchantment and lands, here are the most expensive surge foil cards in the WHO set
Ive always liked the idea of supplemental set reprints that can come close enough to replicating the effects of cards like Lions Eye Diamond and City of Traitors without stepping on the letter of the Reserved List, though theyd probably have to be coupled with a wink-wink ban on the actual cards or else decks like Eldrazi Stompy would simply run four copies of City of Traitors in addition to four copies of Town of Traitors or whatever
If this opponent is running a mono-blue deck and you have enough power on board, you can swing in for the win
Youve got Thornwind Faeries, or Flying Tim, Rod of Ruin, also known as Tim on a Stick, and Rootwater Hunter, sometimes called Swim Tim
Also, none of these trigger as sourceries, so you can do it on any turn as well