Goblin Smuggler
Creature — Goblin Rogue
Haste (This creature can attack and 
as soon as it comes under your control.)
: Another target creature with power 2 or less can't be blocked this turn.
"No one here but us empty barrels!"
2/2
Illustrated by
Foundations#540CommonEnglishLegality
Rulings
Jul 12, 2019
If the target creature’s power is greater than 2 as the activated ability tries to resolve, the ability doesn’t resolve. However, if instead the creature’s power is raised above 2 after the ability resolves, it still can’t be blocked that turn.