When Aquatic Incursion enters the battlefield, create two 1/1 blue Merfolk creature tokens with hexproof. (They can't be the targets of spells or abilities your opponents control.)
: Target Merfolk can't be blocked this turn.
Jason Rainville INTERVIEW
Activating the last ability of Aquatic Incursion after a Merfolk has become blocked wonâ€™t cause it to become unblocked.