This can be done at instant speed, so something to watch out for
its all pretty scary if youre durdling along and have missed a land drop
It's strong everywhere, but it has enhanced value in archetypes that care about counters generally, +1/+1 counters specifically, proliferate tricks for multicolor brews looking to add loyalty counters for their planeswalkers, four and five-color decks, Commanders with evasion, Commanders with a power that, when increased by 1 get a faster kill, Equipment, Aura, and Voltron decks looking to get in kills with their Commander, and loads more
You could upgrade it of course but the Madrigals dont look to threaten more reliable meta archetypes
Unstoppable Ash While not technically a Treefolk lord, this card hailing from Morningside certainly suits Treefolk decks perfectly due to its triggered ability that boosts your all of your creatures toughness by five whenever they get blocked, which will aid Treefolk creatures greatly as they already hold high toughness across the board as a creature type
I write from personal experience and from observing and caring about the perspective of many other players over the years, but theres no accounting for taste