Forerunner of the Heralds (Rivals of Ixalan)
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.
|M:tG Set||Rivals of Ixalan|
|Converted Mana Cost||4|