There doesn't seem to be any real need for these ETB lands - there's quite a few either double white or double black spells, but they all cost 4+ mana, so the odds of you ending up with 3 of a single tapping land are not that high
This pair aren't normally going to be in the same deck, but they are both in the same genre of dork - making a Merfolk beater with big card flow attached for 6 or 7 mana
This deck is running all five of the "Kindred" spells: Kindred Boon, Kindred Charge, Kindred Discovery, Kindred Dominance, and Kindred Summons
Arcane Signet, Smothering Tithe, Dockside Extortionist, Thassas Oracle and others have become ultra-staples displacing entire classes of card from the format, and community sentiment around new legendary creature designs which play too well with the mechanics and needs of Commander is similarly mixed
However, if nobody claimed the bounty on the previous turn, the reward increases