GoGiWiWiVa is a strategy that is a lot simpler than it's name might imply. It uses both Golems and Giants as tanks for Wizards, Witches and Valkyries. It is designed to be a strong 2 star strategy against almost any base.
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Minimum Troop Housing Space Required: 220 Minimum Spell Housing Space Required: (not specified)
In the Clan Castle, you'll want a Golem, a Wizard, an Archer and an Earthquake Spell. Note that with TH10, swap the 3 Witches out for 4 Valkyries and a Wizard. At TH9, cut 1 Rage Spell, 2 Valkyries and a Wizard to comply with housing restrictions.
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Place your CC Earthquake Spell on strong opposing buildings.
Drop your Golems on whatever side you want, followed by Giants and Wizards.
Place Wallbreakers to bust through the exterior compartments.
Once there is a path into the base, drop your Witches, Valkyries and Heroes.
Use your spells as needed.
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This attack strategy is a pretty strong 2-star strategy at TH11 and I hope it brings you success!