Mighty Servant of Leuk-o ability not working

[ArielMTG]

Mighty Servant of Leuk-o ability not drawing the 2 cards when crewed by exactly 2 creatures: Whenever Mighty Servant of Leuk-o becomes crewed for the first time each turn, if it was crewed by exactly two creatures, it gains "Whenever this creature deals combat damage to a player, draw two cards" until end of turn.