what are sideboard cards mtg your favorite for Green? a copy of Rocky Rebuke has somewhat won me some BO3 games after the AtLA x expansion. : r/StandardMTG Underappreciated Standard Sideboard Cards

I also love Reckless Barbarian as a 2/2 for two mana that you can cash in later for two red mana to help you cast a more expensive Dragon, and Patron of the Arts isnt bad either as an early blocker that can provide color-fixing mana in Treasures

Agrus Kos can copy both activated and triggered abilities, as long as hes the only target

Whats more, you can use the black ability to draw cards and lose life in every color, and youll draw even more cards if you have proliferate or counter synergies

The definition is personal, but its a crucial first step

You should have cards that work well together and support each other's strengths