FGO!Tamamo (one tail only) vs. Semiramis in the Hanging Gardens
Caster!Cú Chulainn (no Matrix Wodan) vs. Semiramis in the Hanging Gardens
Caster!Cú Chulainn (with Matrix Wodan) vs. Semiramis in the Hanging Gardens
At first glance, I'm thinking they can defeat Semiramis' magic, but are powerless against both Sikera Usum and the basmu*. Unless either Wicker Man or Matrix Wodan can deal enough damage to defeat her before she unleashes the poison?
* Actually, can Semiramis summon more than one at once?