Try to only shave small numbers of things and try to minimize sideboarding if you are unsure.Andrews article has many good examples of this, so Ill focus on identifying which cards can be trimmed in what spots so you can make new plans as things change
The Articuno ex deck has proven tough to beat, particularly when it includes a card like Lapras ex
I think the important thing to remmber here is just because it needs four spells in a turn to flip, doesn't mean you have to bear the whole load
We've dug through many, many MTG sets to select the most disturbing, gruesome or creepy MTG cards we could find
If your Metamorph is put on the graveyard after the legens rule is applied, it no longer has Emrakuls last ability where
Life is a resource in Magic: The Gathering, like anything else, so be sure to spend it if you feel like it will draw you into your game-winning card or combo