Many of the best equipment and equipment payoffs simply weren't in print at the time, like Colossus Hammer or Sigarda's Aid, and ones that were in print (Stoneforge Mystic, Puresteel Paladin) weren't included because that's how precons roll, I guess
Xolatoyecs main function is untapping any of your cards with counters on at the end of turn, effectively providing most of your merfolk with vigilance and untapping any lands bestowed with Flood Counters, freeing up mana for counterspells and reaction-based play
It will be a long time before theyre $80 again, if ever, but they wont be $20 for long
Flooding the board with Tarmogoyf tokens makes it just enough of a threat on its own to be a respectable commander
Discover 4 is so much better than drawing a card its similar to why Monumental Henge is better than War Room
You search up Plains equal to the difference in the number of lands, put one in play tapped, and put the rest into your hand