If this card in its owner's possession is destroyed by an opponent's card (by battle or card effect): You can Special Summon 1 "Ritual Beast" monster from your Deck or Extra Deck, ignoring its Summoning conditions. You can only Special Summon "Spiritual Beast Tamer Winda(s)" once per turn.
Effect can Special Summon Ritual Beast monsters from your Extra deck.
Relies on your opponent destroying this card, which can be slow.
You can place Winda face-down so your opponent unknowingly attacks and destroys it. Although this can fail because of Winda’s relatively high defense.
Ritual Beast Extra deck
Being both a Spiritual Beast monster and a Ritual Beast Tamer monster, you can use Winda as either fusion material for a Ritual Beast Extra deck monster. When destroyed by your opponent, Winda’s effect will also let you summon these monsters ignoring summoning conditions.
An archetype that swarms the field to make their contact fusions. However, Special Summoning a Ritual Beast Tamer will not trigger their effects so it might be better to Special Summon a Spiritual Beast. Spiritual Beast Apelio can take advantaged of the destroyed Winda in your graveyard.