Despite only being a 6/6 it has trample as will do more reliable or meaningful damage
The Queen, Mirror Seeker is a four-cost card that has some pretty good stats: with its two willpower and five health making it surprisingly beefy for its relatively low ink cost
It also has Ward, meaning it cannot be chosen or targeted by actions, abilities, or items, leaving your only option to get rid of it being a good old-fashioned challenge
(To cloak a card, put it onto the battlefield face down as a 2/2 creature with ward
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
At the very least the land exile should have cost a green to use upfront and then give two mana back