mtg energy deck commander Energy in Commander and 1 reference card. Commander Decks, Aetherdrift—Magic: the Gathering

Any base power- or toughness-setting effects that start to apply after the counter is placed on the creature will overwrite the counter's effect

Ooze still needs creatures to eat, only gives one life per trigger and also needs green mana each time

Timing is key here, as we want to make sure to do this at a time when we're untapped and the biggest threats are tapped

Treachery (Steal) 21

Calamity of Cinders

There are some cool options like Showdown of the Skalds, but with Boros having such a skew towards being aggressive its hard to say that any gold card offers more to Boros than adding an additional Boros land that enters the battlefield untapped