For Sieges, the battle must always be protected by an opponent of the controller if the protect leaves the game, the controller must instead choose a different opponent to protect it
This is an almost meaningless point, but you could bring it up if youd like to be pedantic
These are enchantments that can be attached to creatures to stop them from blocking or attacking
He isnt as popular at Mythic Championship V as xRank would have predicted, falling to the 10th most-played card rather than the predicted third, but dont sleep on just how difficult it is to beat a Turn 3 Teferi
More on this topic can be read in the rip test article about this
However, like the tabletop version, Arena itself can have a steep learning curve if not approached carefully