Their Flare Strike attack, although it cannot be used on consecutive turns, can sufficiently scorch foes
Shortly after this card was previewed, it dawned on most Modern players that this One Ring to Rule them All would become One Ring to Rule Modern for several reasons: 1) almost any deck can play it and/or wants to play it, 2) its ETB ability single-handedly shifts the state of the game, 3) it provides massive card advantage, 4) it's abusable
I envision blink shenanigans alongside instant-speed return-from-graveyard effects like Not Dead After All
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