Recursive creatures that cast or return themselves from the graveyard do the trick to, making this yet another home for Gravecrawler, Forsaken Miner, and unearth creatures
These cards are separate from Magic: The Gathering lore, and are instead cards based on other franchises such as Lord Of The Rings, Doctor Who, or, in this case, AMC's The Walking Dead show
The only question is how good Merfolk will end up being in the Historic meta thanks to these new additions
In mono-white, you only have so many aura cards that are great, and they mostly do different things
Radiant Lotus allows you to sacrifice any number of Artifacts and generate three Mana per sacrificed card
Yenna, Redtooth Regent Yenna, Redtooth Regent can generate a lot of constellation triggers for things like Archon of Sun's Grace and can ramp pretty nicely with cards like Wild Growth, but is that better than running a more efficient Selesnya commander with a card draw ability