Some instants can be used to counter another spells, to destroy a creature, give the power and toughness of a creature a boost, ect
Crimson Vow & Secret Lair: Stranger Things We're currently evaluating the power of different commanders: Grolnok, the Omnivore - Tier 2-3 (Grolnok has insane synergy with different cards like Hermit Druid, Intuition and Traumatize) Toxrill, the Corrosive - Tier 3-4 (looks like a very powerful commander, but 7 mana is a lot for a competetive commander) Eruth, Tormented Prophet - Tier 3-4 (Eruth can abuse weird draw spells like Goblin Lore to dig very deep and storm off, but these cards can also backfire, especially in cEDH) The Stranger Things commanders are super difficult to evaluate since they can just partner them with each other
(To behold a Merfolk, choose a Merfolk you control or reveal a Merfolk card from your hand.) When this creature enters, create a 1/1 white and blue Merfolk creature token
Imagine a draft where you start with a strong Black card
Thankfully, while strong, using this Commander isnt a requirement for bracket five cEDH play