When Forerunner of the Heralds enters the battlefield, you may search your library for a Merfolk card, reveal it, then shuffle your library and put that card on top of it.
Whenever another Merfolk enters the battlefield under your control, put a +1/+1 counter on Forerunner of the Heralds.
Dreamroot Cascade enters the battlefield tapped unless you control two or more other lands. {T}: Add {G} or {U}.
Dreamroot Cascade enters the battlefield tapped unless you control two or more other lands. {T}: Add {G} or {U}.
Shattered Sanctum enters the battlefield tapped unless you control two or more other lands. {T}: Add {W} or {B}.
At the beginning of each end step, create X 1/1 white Spirit creature tokens with flying, where X is the number of tokens you created this turn.
Draw two cards. Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")
