I dont see Boros burn charging up the ranks in Commander, but I feel like this card has a place
Once blockers are declared, the active player has priority, and this is where he or she might use a combat trick like Awaken the Bear
He finds Karakas and Torach and just starts stripping my hand
Finally, Trap Cards which can Summon during your opponent's turn such as "Call of the Haunted", "Oasis of Dragon Souls", and "Back to the Front" are useful as not only do they revive monsters from the Graveyard but they can do so during the opponent's turn to potentially disrupt their plays through the banishing effects of "Lord Felgrand", "Arkbrave", and "Dragon Spirit of White"
Before this, weve also seen how Adventures and Omens add to a cards color identity, through color pips, which Conjuring and Spellbook cards lack