This question is about material from Genuine Fantasy Press's Compedium of Forgotten Secrets, which has a free version available.
Does Unspoken Agreement Spell stack with multi-attack or cantrips?
Casting Time: 1 bonus action
Range: 30 feet
Partnership is two minds acting with a singular purpose.
You make a simple gesture, indicating to an allied creature within range that they should perform an action and sending a telepathic message of 25 words or fewer. The target chooses either the Dash, Disengage, Dodge, Attack (single weapon attack only), or Cast a Spell (a cantrip with a casting time of one action) actions. The target uses their reaction to perform that action. You also take the same action as part of casting this spell.
Unspoken Agreement says that you take the same action when casting the spell. So I have 2 questions:
First: If my ally casts a cantrip can I cast booming blade as bonus action and then attack 2 times?
Second: If my ally casts a cantrip can I cast booming blade as bonus action and then cast eldritch blast as my main action?
(My character is a swords bard and a level 1 warlock.)