Call For Backup's main focus is on those counters, and in Naya (red/green/white), they have access to all the best cards that care about +1/+1 counters
If another effect modifies how much damage your sources would deal, including preventing some of it, the player being dealt damage or the controller of the permanent being dealt damage chooses an order in which to apply those effects
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) : Draw a card, then discard a card
Since card draw and card advantage have to come at a cost, it got me spiralling down a Scryfall rabbit hole to determine what ways Green has to leverage card advantage, and what those methods look like in-game
Just contact us to set up a time to pick them up and we will pay you
Luckily, this is Lusamine's best card, so it should always be the most valuable among her immediate peers