You can only activate this effect during your Standby Phase. Tribute this face-up card to select and destroy 2 face-up monsters with an ATK 1000 or less.
Rulings
Netrep Rulings
"Blast Juggler" does not count itself for the number of eligible monsters with an ATK of 1000 or less.
FIRE|
Level 3|[ Machine / Effect ]
ATK 800|
DEF 900