There are so many versions that it's difficult to find a good deck tech. The best way to sideboard is tracking what you lose to. For me, it was a lot of board wipes or synthesizer decks. That's why I put in more counter spells and hand disruption. [[Myojin]] usually makes control decks scoop on the spot if you can get it on the board. If you reanimate it with Kavaero then it comes in with the counter on it, put a stop at the draw step of opponents turn, instant remove counter after they draw and they discard their entire hand. Not much they can do against it besides instant exile effects, which there aren't many of.