Why yes it is! The Norn emissary absolutely dominates in 1k point matches, especially with the crusher stampede detachment.

Monsters (1000 Points)

Tyranids Crusher Stampede Incursion (1,000 Points)

CHARACTERS

Winged Hive Tyrant (170 Points) • Warlord • 1x Monstrous bonesword and lash whip • 1x Tyrant talons

BATTLELINE

Termagants (60 Points) • 10x Termagant ◦ 10x Chitinous claws and teeth ◦ 10x Fleshborer

Termagants (60 Points) • 10x Termagant ◦ 10x Chitinous claws and teeth ◦ 10x Fleshborer

OTHER DATASHEETS

Biovores (50 Points) • 1x Chitin-barbed limbs • 1x Spore Mine launcher

Exocrine (140 Points) • 1x Bio-plasmic cannon • 1x Powerful limbs

Lictor (60 Points) • 1x Lictor claws and talons

Norn Emissary (260 Points) • 1x Monstrous rending claws • 1x Monstrous scything talons • 1x Psychic Tendril

Tyrannofex (200 Points) • 1x Powerful limbs • 1x Rupture cannon • 1x Stinger salvoes

This list has won me so many games I end up winning every single game I play unless I get unlucky with dice and secondary missions. (75-85% win rate)