im not serious bout this idea at all, but just for a creative outlet, lets brainstorm skills that require multiple demigods.
-a regulus standing in TB's ring of fire will shoot flaming arrows that do 1.5x damage. when using snipe, the path of the arrow is engulfing in flames causing 50 damage if on it.
-the rook can give TB or regulus a ride on his shoulder, but they cant do anything other than shoot and other innate abilities.
-sedna and UB will go into leapfrong mode where they jump over each other in a straight line and damage everything they land on.
-QoT can cast a shield on one of her minions and if oak cast invulnerability on it, the minion will suck in all enemies for 5 secs, which allows the QoT to blow up her minion.
-if erebus bites someone that has been infected by one of UB's abilities such as spit or post mortem or diesese claws, erebus mutates to rook size and vomits out all the infected blood until he is back to normal size. the area that has been vomited on will cause 50 damage per second. then its spreads out and the bigger it gets, the less damage it does until the damage is 0. killing him at rook size causes the same effect except where he was will be the epicenter.
-rook can throw any melee demigod across the map but they will most likely die, except erebus because he will go into mist upon landing.( unless he lands in a pit). also, rook can throw any melee demigod into a portal and the exit portal will be completely random and sometimes you will fall from the sky and die unless ur erebus.