@ TimeWalk sideboardingMost of these are fine. There's always a small buffer on what you can get away with in boarding so there's no "exact" means of doing it, so I can't say you did anything incorrectly. Although I was a bit surprised you elected to board out a Meditate against the Stoneblade player knowing that they run discard. Outside of Stoneforge Mystic they don't have any clock at all, so I would likely keep this in the deck. The High Tide against Burn is really a choice of preference; I personally like to keep it in the deck because it increases your odds of naturally having it or finding it when most times it is difficult to survive to Wish for High Tide, but at the same time it's a perfectly logical choice to maximize Wish's efficiency to find it should you be able to stall them the first few turns. Another thing on Burn, but if the version you play against is rather creature heavy I'd consider boarding in the Snap as well. This is also nice because it helps the possibility of going off with fewer lands or turn three. The lack of Meditate against the Zombardment deck isn't crazy, but I'd likely keep it given their clock isn't amazing and they lack the permanent benefits to punish you for playing it (like Jund which has Liliana and Dark Confidant) so it's worthwhile to use to fight discard.@ Force of Will on Stoneforge MysticThis is pretty much always the wrong play, regardless of if you knew he had discard. Unless you're sitting in a late game situation where both decks are in topdeck mode and you can simply hardcast a Force, this is the wrong play. I haven't countered a Mystic in over a year, and the last time I did it cost me a match. It really shouldn't matter what they're getting, whether it's Feast and Famine or not. My philosophy here is if you have the option to Force it, then those cards are expendable anyway and can be discarded later by Feast and Famine so it isn't worth countering. The clock is 5-6 turns at best with this, which is plenty of time to find cards and win the game while still having that Force of Will as protection. Granted if they're attacking you with it for 4+ turns and you haven't won then it isn't likely, but point being you should be able to do before then. If they get Batterskull, then their clock is slightly larger but they lack that element of disruption which is better for you. Now if you Force it, you slow their (already slow) clock, but now lack two cards to protect against anything else in hand. I'd prefer to have them make me discard one at a time and take a few damage than lose my Force of Will when it could be used on something better. Plus, using Force on the Mystic also runs the risk of getting completely blown out if they have a second one. If you burn your Force on it and they follow that up with another one the following turn, you wasted the Force, whereas their second Stoneforge Mystic wasn't going to be relevant at all.