If I have 2 Halimar Excavator on the battlefield and then my turn comes and I cast another creature. Do I count up my allies and make my opponent 2x the amount of alliesI have ---since I have 2 Excavators? I hope this makes sense, thanks.
If another Ally (it must be an creature with the type Ally, or something like Clone copying an Ally creature) enters the battlefield, each Halimar would trigger, and each would mill for the number of cards equal to the number of Allies you control. In summary, yes, so long as the creature is an Ally.
yes allux that's correct. if you're controlling 2 halimars and a third ally comes into play it would trigger a mill for a total of 6 cards.
