EDH (what Commander was originally called) fell into my life like a revelation, giving form to everything I could possibly want in a multiplayer format
Poison counters go on a player, so Solemnity just flat-out stops that from happening
But, Im purely talking as an investment (long or short term) so its an easier sell to your significant other when you see these numbers
Concerted EffortConcerted Effort (4,082 Inclusions, 0% of 2,556,456 Decks) The original Odric, Lunarch MarshalOdric, Lunarch Marshal is a lot more reasonable at four mana, but also doesn't actually hand out anything unless one of your creatures already has it
Any base power- or toughness-setting effects that start to apply after the counter is placed on the creature will overwrite the counters effect
Fiend Hunter and Palace Jailer are the clearest examples of solid, budget-friendly removal that's good for flickering, but most of the others aren't great as they're more in the vein of the temporary Banisher Priest