Enhanced Bardic Thaumaturgy

When ancient Bards learned the secrets of the holy thaumaturgy, they turned it into a tool for making music. In early experiments it was discovered that bards working together musically would see an amplification of the range of the effects of Enhanced Bardic Thaumaturgy. For each bard working in concert with the initiating bard (30 ft), the range of effects is increased by 30ft, up to a maximum of 300ft with 10 bards working together. 

• Your voice booms up to three times as loud as normal or you may whisper and be heard within range for 1 minute.
• You cause flames to flicker, brighten, dim, go out, re light, or change color for 1 minute.
• You cause harmless tremors in the ground for 1 minute.
• You create an instantaneous illusion that originates from a point of your choice, this can be used to turn mundane items and weapons into enchanted musical instruments that make the appropriate noises if played with proficiency for 1 minute..
• You instantaneously cause an unlocked door or window to fly open or slam shut, or raise/lower the ambient temperature by 5 degrees. 
• You alter the appearance of your eyes, face or the size of your body by +/- 1 size for 1 minute.

If you cast this spell multiple times, you can have up to three of its 1-minute effects active at a time, and you can dismiss such an effect as an action.