On the flip side, you can start selling only single cards
Cards like Waterbender's Restoration, Extravagant Replication and Thassa, Deep-Dwelling repeatedly flickering your Aether Channeler and Riftwing Cloudskate gives you an incredible advantage because your opponents have to recast the same creature over and over (this is trickier in our era of powerful enters abilities, but still works)
But the weirdest thing of all is that whenever you Summon an Xyz Monster, the stuff you used to make it sort of sticks around
Trap: Negate the effects of 1 Effect Monster on the field until the end of this turn
This means we can be free to mess with lands in other ways
Beyond being a potent, albeit expensive, board wipe, The Meathook Massacre consistently dishes out damage