Decklist: 1 Gandalf the Grey
This card is so ridiculously good, it dominated the game for years and actually changed the entire design philosophy the game is built around
Explorers Of The Deep - The Lost Caverns Of Ixalan This Merfolk deck is pretty par for the course in terms of the primary mechanics being flooding the board with lands and drawing cards, but the added threat of explore and the subsequent wave of +1/+1 counters triggered by Hakbal of the Surging Soul make this Commander pre-con a remarkably powerful deck
Her third Loyalty ability, which costs negative three Loyalty points, deals four damage to target creature
for one red Mana, it can get +1/+0 until the end of turn, gain the First Strike ability word until the end of turn, or gain the Haste ability word until the end of turn
But Atarkas Command stands above them by the sheer amount of flexibility it provides