The main thing that wed recommend is Senseis Divining Top, because it lets you manipulate the top card of your deck - and that means you can always hit what you want with Jadzis ability
This means youre essentially risking a slot a lot of the time, hoping that the deck youre targeting shows up
Once that spell or ability starts to resolve, however, and its controller chooses which permanents and players will get new counters, it's too late for anyone to respond
Some might argue the Mindslaver effect on Emrakul, the Promised End is even more miserable, and protection from instants is still a rough hurdle for some decks to overcome.
Let's turn to my first Top Ten from the latest set called Aetherdrift for kitchen table formats like Type Four, Five Color, Pauper, Peasant, Highlander, multiplayer and some format you might have heard of called Commander
Syr Konrad, the Grim is a Throne of Eldraine favorite that watches those self-mills and reassembling from the graveyard and punishes opponents in the process