While players in the Commander format start with forty life, if a player gains ten or more poison counters, they lose the game, meaning a deck based around infect only needs to deal ten damage to each opponent rather than forty
Invasion of Theros is a battle that can tutor gods, among other card types, and transforms into Ephara, Ever-Sheltering if the battle is defeated
One thing to be aware of is that you may pull some Commander-only cards out of Collector Booster packs, so you'll want to check the set symbols before building Standard decks
Decklist The decklist consists of 30 creatures, 12 sorceries, four instants, 15 artifacts, five enchantments, and 33 lands (one land the backside of a spell)
Guidance of the Sun and the Moon 'Guidance of the Sun and the Moon' tasks you with collecting 2 specific Ex cards
As mentioned, two is a lot of mana, but this is a hard counter that counters any card type and does so at a better card economy than any other counterspell at its cost