Metallic Turbo is the most important attack here, allowing the user to move two Metal-type Energy Tokens to a Benched mon while dealing 30 damage
As long as a card doesnt specify a restriction on when you can activate the tap ability, you can use it at any time you could cast an instant
Masterminds Acquisition Mastermind's Acquisition costs too much as a tutor and as a wish, but in fast mana fueled mono black cEDH decks like K'rrik, Son of Yawgmoth, you need all the tutors you can get
Its a very nice go-wide merfolk commander, and especially in Ixalan , merfolk are drawn to +1/+1 counters
Low land hands with Cradle can often need throwing back where you could have kept if it were a forest
There are likely other exceptionally valuable cards out there in the rare slot, sold either to private sellers or through other nonpublic ways, making them difficult to track