Both humans and +1/+1 counters have a deep well of support in Selesnya, and theres about 40 cards that could be the foundation of a powerful, aggressive deck
You can use this to dodge board wipes, attacks, Paddington hard stares and probably your tax bill too
However, if the goal is to banish opposing characters, Steel cards like 'Fire the cannons!' and 'Smash' are great at dealing with Glimmers that might try to end the game early." Personalize it
Between flashback and the ability to discard multiple copies of a card at once, the ceiling is lost in the clouds
Decks that are populating particularly like this kind of effect, and while 6 mana is a lot, the modes can have a major impact in different ways youll find relevant in many Commander games