Tyranid Formations

Subterranean Swarm
1x Trygon Prime
1x Trygon
1x Mawloc
3x Ravener Swarms

Skytide
1x Skytyrant Swarm
1x Skyblight Swarm
1x Sporefield

Skytryant Warm
1x Hive Tyrant
2x Gargoyle Broods

Skyblight Swarm
1x Hive Tyrant
1x Hive Crone
2x Harpies
3x Gargoyle Swarms

Sporefield
3x Mucolid Spore Clusters
3x Sporemine Clusters

Neural Node
1x Maleceptor
3x Zoanthrope Broods

Phodian Annihilation Swarm
1x Children of Cryptus
1x Phodian Hive Warriors
1x Beast of Phodia

HyperToxic Node
1x Hive Tyrant
1x Toxicrene
3x Venomthrope Broods

Endless Swarm
3x Hormagaunt Brood
3x Termagant Brood
1x Tyranid Warriors

Deathleaper's Assassin Brood
1x Deathleaper
5x Lictors

Hive Mind Brood (old?)
1x Hive Tyrant
1x Hive Guard Brood
1x Zoanthropes (3-5)

Bioblast Node