TLDR: I focused on who I thought was the bigger threat in a magic the gathering game ( we played before and Y ( strong deck person) dominated against both me and the other player ( X)) and I essentially killed them ( they resigned). Then stated it was no fun playing because I was bullying and if I “wanted to play that aggressive that it was fine, but they knew now”. AITA?

I was playing against 2 people. Let’s call the first X and the second Y. Previously we had played and Y had a very strong deck which quickly can get out of control, so did X. The amount of damage/ creatures which get rapidly stronger with stacking buffs every turn which, previously, caused BOTH Me and X to resign. Now, we played a few rounds with different decks ( I played the same deck from before) and was learning where to better my deck. I switched 3 cards before Y switched back to the previous strong deck. Given what I knew from before, there is RAPID growth. With a card that doubles the number of tokens created, each with the mana value of different spells which, before, got up to 11/11 with a +1/+1 like every turn. Knowing this, I focused against Y. (NOTE: we are all playing together: 1v1v1.) I focused because I knew it rapidly ramped up and once it was going it felt impossible to fight. So, I focused on knocking their creatures. I happened to have pulled a great hand: it have my creatures life link ( allows me to heal based on damage). So I focus on them for 2 rounds: after the first they have ~ 5 creatures incubating at various strengths and around 27 health left. I have, from life link, gone up to 72 I think? This is where I think I fucked up as the second round I attacked again and they resigned. Note: the last 2 times I battled that deck I lost rapidly and it was very very strong which is why I targeted them.

So, they got very mad. They resigned and started tell me how “ I didn’t know we were going to play that way” and “ I could have wiped you ( killed you in game) but I didn’t. I don’t find that fun, but if you want to do that then we can” etc. it was clear they were pissed because I had focused them instead of splitting my attack between both X and Y. When asked why I did the attacks two rounds in a row and not at X, I explained that I knew the deck ramped up quickly and thought Y was closer to getting to a very strong state ( I was under the assumption they were further along towards very strong than they were) as they had incubators. Y got mad, explaining they could, at max, with their mana, summon 3 creatures from them. I was under the assumption it was only 1 mana, I thought it would be 6 creatures in one turn. The strongest creatures I have are like 5/5’s. Meaning, if they were able to get the combo they did the last 2 times, I wouldn’t be able to really do anything.

Anyways, Y turned to X and asked them about if they would do what I did: X tried to explain where they understood targeting Y because of how rapidly strong Y gets but it just made the situation worse. Y said that if I “ wanted to play a 1v1 and wanted to bully them, then fine, but they knew now and would play this way”. Y later made a comment that X’s deck( which wasn’t played again because it could be broken/ extremely strong) should just be played as is because I was so aggressive.

Am I the asshole? I asked X and they didn’t want to get involved. I don’t know. My friend told me to post because I don’t know. I said I was sorry, but Y said they didn’t believe me. I thought it was good to try and stop the progression because it can be very strong, but did I go to far? X had little to no creatures and weren’t really a threat.

Ps. Please don’t post anywhere else bc I REALLY don’t want them finding this.