You might not be able to ride him to Mordor, but you can certainly follow him to victory
Another entry from Future Sight, Second Wind is a bit less fringe
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
They come with unique effects that can be utilized only once upon deploying the card
The face commander, Brimaz, Blight of Oreskos is fantastic, giving you an Incubator token whenever you cast either a Phyrexian or artifact spell
Starnheim Unleashed Reminiscent of Entreat the Angels, Starnheim Unleashed makes angels at a worse rate when making multiples, but the worst case mode of making a 4-mana 4/4 flier is still pretty good