You can send the top 4 cards from your deck to your Underworld, then Special Cast any number of 1 Spirit I Elestrals sent to your Underworld this way.
| Detail | Value |
|---|---|
| Card type | Elestral |
| Element | Frost |
| Element cost | Frost,Frost |
| Subclass | Behemoth |
| Attack | 7 |
| Defense | 5 |