It's all about the Powder Heal ability, which allows it to heal 20 damage from every other friendly Pokemon
Whether youre building around Sauron, the Dark Lord in a powerful combo list or sleeving it up for a casual pod, having access to this card at a fraction of the original price opens up your entire deckbuilding strategy
II Back to Commander Anthology Vol
This new partnership lasted three cards (to date) in the Sun & Moon series' final set
Similarly, if a spell is cast without paying its mana cost, but the player did pay mana for additional costs such as from kicker or from Thorn of Amethyst, Boromir's second ability won't trigger and won't counter that spell
That meant Leyline of the Void or Rest in Peace, but those were easily countered with sideboard cards