mtg roon of the hidden realm commander deck abuses etbs and a not so known rule to permanently remove enemy commanders from the game. , Comment “deck” and I’ll send you a link or just visit the link in my bio to see From the Commander 2013 set. Commander Deck Tech - Roon

You can use this ability proactively to untap your own permanents, giving your creatures pseudo-vigilance, or untapping lands that you tapped before combat

Then we come to the blue cards in the list

Bloodline Bidding Convoke goes a long way in making Bloodline Bidding playable

All of the decks feature big, splashy creatures and some combos, including lots of evasion, so theres usually something out that can start swinging away

#8 Counter Intelligence (Edge of Eternities) Edge of Eternities Commander Deck Counter Intelligence Commander: Edge of Eternities Counter Intelligence would be at the top of this list if it were a competition for the most easily breakable card, which would be Kilo, Apogee Mind