yes it is an instant effect in the current OCR for the cards. the OCR lists all corrections to the wording of a card so that the cards perform the way they were intended.
Leeroy Jenkins, 7, Alliance
Human Paladin—Retribution, 3A 2R 8H
Blackhand Doomsaw [T4R1P6] (Melee)
[Crit]: “At least I have chicken!”
Leeroy's Battle Cry (Instant): Say, “Leeeeerrrrooooyyy Jeeennnnkinnns!!” >>> Leeroy has [Physical] [Magic] +1 and move +1 this turn. Each other ally takes 1 damage.
you can get the most current OCR and rules at the following link
http://entertainment.upperdeck.com/community/files/29/english-rules/category1104.aspx
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