Few Bugs to Note

So, I been gone like 2 years and came back and found this little gem. Luckily, I got a lot of art downloaded after installing and such, but then my Internet went down for a few days and I just played against the AI a bunch for like 3 days and ran into a few odd little things...
1) I can't remember the deck, but I was very close to winning a game with Master of the Feast or something (5/5 Flying Demon for (1)(B)(B) that lets your opponent draw on your upkeep) and the AI used a Naturalize on it and killed it... Not sure it works that way... lol
2) I was using Oriss, Samite Guardian (The one with Grandeur, in case I'm wrong on the name) and it was very near impossible to use correctly. At times, the game would seem to notice that I had an ability I could use, other times the game skipped right on through the AI's main phase until they already played their spell... Rendering the card kind of useless.
3) Vesuvan Shapeshifter ... If you copy a creature with an activated ability, there is no guarantee you will be able to trigger or pay for any of the shapeshifter's abilities UNLESS some spell or ability has already resolved on the stack after you copy something. This is REALLY bad when you turn it face-up as 99% of the time, you will HAVE to resolve some other ability on the stack AFTER he flips before it will realize there is in fact an ability there.
4) Last one I can think of off the top of my head. I believe I was playing against Crocodile Dundee and after I blocked his Blood Knight, there was suddenly a -1/-1 counter on the knight (his knight, btw) and every single other creature on his side of the board vanished. Not exiled, not killed, not just NOT rendering, just gone. Was a really easy win after that, but it raised an eyebrow.
One other thing that isn't really a bug, but a really weird AI behavior: I was attacking the AI with 5 damage worth of creatures (just enough to kill them/force the block) and they had a bunch more creatures than me (5 maybe) while I had Painful Quandary on the board. He cast Fog , but rather than discard and swing for the win next turn, he kept his 2 cards, took the Lose 5 life and killed himself. Not very effective, but I laughed pretty hard.
1) I can't remember the deck, but I was very close to winning a game with Master of the Feast or something (5/5 Flying Demon for (1)(B)(B) that lets your opponent draw on your upkeep) and the AI used a Naturalize on it and killed it... Not sure it works that way... lol
2) I was using Oriss, Samite Guardian (The one with Grandeur, in case I'm wrong on the name) and it was very near impossible to use correctly. At times, the game would seem to notice that I had an ability I could use, other times the game skipped right on through the AI's main phase until they already played their spell... Rendering the card kind of useless.
3) Vesuvan Shapeshifter ... If you copy a creature with an activated ability, there is no guarantee you will be able to trigger or pay for any of the shapeshifter's abilities UNLESS some spell or ability has already resolved on the stack after you copy something. This is REALLY bad when you turn it face-up as 99% of the time, you will HAVE to resolve some other ability on the stack AFTER he flips before it will realize there is in fact an ability there.
4) Last one I can think of off the top of my head. I believe I was playing against Crocodile Dundee and after I blocked his Blood Knight, there was suddenly a -1/-1 counter on the knight (his knight, btw) and every single other creature on his side of the board vanished. Not exiled, not killed, not just NOT rendering, just gone. Was a really easy win after that, but it raised an eyebrow.
One other thing that isn't really a bug, but a really weird AI behavior: I was attacking the AI with 5 damage worth of creatures (just enough to kill them/force the block) and they had a bunch more creatures than me (5 maybe) while I had Painful Quandary on the board. He cast Fog , but rather than discard and swing for the win next turn, he kept his 2 cards, took the Lose 5 life and killed himself. Not very effective, but I laughed pretty hard.