The vacuum spell is a spell that sucks up resources also reinforcement troops. Drop this spell at some storages and see the resources coming(and poor reinforcements being sucked up) the levels go as below but troops that get sucked depend on their housing space so for example 5 archers could get sucked up or 1 giant
Lvl 1
Sucking rate: 10% of resources and max of 3 troops
Tile range: up to 5 tiles
Elixir needed to create: 50000
Time to create: 50 minutes
Lasts for 4 seconds
Lvl 2
Laboratory lvl needed: 5
Sucking rate: 15% of resources and max of 4 troops
Tile range: up to 6 tiles
Elixir needed to create: 65000
Time to create: 50 minutes
Lasts for 5 seconds
Lvl 3
Laboratory lvl needed: 6
Sucking rate: 20% of resources and max of 5 troops
Tile range: up to 7 tiles
Elixir need to create: 80000
Time to create: 50 minutes
Last for 6 seconds
Lvl 4
Laboratory lvl needed: 7
Sucking rate: 25% resources and max of 6 troops
Tile range: up to 8 tiles
Elixir needed to create: 95000
Time to create: 50 minutes
Lasts for 7 seconds
The spell should look like there is a tornado in it
When you deploy it, a swirl forms depending on tile range that sucks resources or reinforcements in depending on lvl

