Although it may sound like a bit of a tongue-twister, the cost reduction that comes from tapping a creature is an additional cost that's part of harmonize's alternative cost
There are two utility lands, Karakas and Horizon Canopy
Check out some of our favorite cards that got spoiled a few weeks back, and hey, while you're here, might as well check out all of our coverage of Final Fantasy over the years and Magic: The Gathering
Currently, copies of Blightsteel Colossus can be yours for just $22
Its perhaps not best-suited to newcomers since it requires keeping tabs on a lot of counters (often different types), but by spending some time planning, you can create Summon creatures and keep them on the board much longer than expected, while also powering up just about everything on your board