For many, many years, if you were to ask what this colors pinnacle option was for boosting damage output, the answer almost always was Furnace of Rath: a blistering four mana Enchantment that, quite literally, doubled all damage dealt in the game, regardless of source or player
Of them, the biggest threat as I begrudgingly mentioned is the Scions & Spellcraft Commander Deck led by Yshtola, Nights Blessed
It's a seven mana Artifact that taps for five, making it effectively cost two
You save your creature from removal by bouncing it and simultaneously counter the opponents spell
To conquer and kill every living thing, until there is nothing left but spilled blood and shattered bone