Oracle

Enchantment 

Whenever you cast a Merfolk spell, create a 1/1 blue Merfolk creature token with hexproof. (A creature with hexproof can't be the target of spells or abilities your opponents control.)

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

9/29/2017
The ability of Deeproot Waters resolves before the spell that caused it to trigger.

1/19/2018
If an effect refers to a “[subtype] spell” or “[subtype] card,” it refers only to a spell or card that has that subtype. For example, March of the Drowned is a card that benefits Pirates and features Pirates in its illustration, but it isn’t a Pirate card.

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