The unblockable ability works with Coastal Piracy and other such effects, and I guess it lets you win with commander damage if you string together infinite extra turns, but this is overall underwhelming unless you want to play the God of the Sea for flavor
But if you really need access to colorless graveyard recursion, heres your card
Gadwick, the Wizened Gadwick, the Wizened is a midrange draw creature with huge control upsides
Quick, pull up the next article, and Ill see you there
Etali, Primal Conquerors ability being an ETB means youre guaranteed at least one card from each player that you can play for free, and its stipulations mean you wont hit any duds
Youll see tri lands referred to in various sets, starting as early as the Invasion block and continuing into recent sets like Ikoria: Lair of Behemoths