"Hi, welcome to the mortal realm," Ruby said. "I'm going to suggest you go back in before you get hurt."

The demons, unconcerned about her words, laughed evilly as they emerged.

(OOC: Initiative Roll - Spellweaver rolled 21 using 1d20+5)

Go

Ruby snapped her fingers and a huge spray of gem stones shout out at the demons.

(OOC: Cone Area Effect Damage Toughness DC 27)

The demons were forced back, but one dodged to the side, and lashed at Ruby with a fiery whip!

A hit, Toughness DC 25

(OOC: Toughness Roll - Spellweaver rolled 19 using 1d20+15. Gonna reroll that, Spellweaver rolled 17 using 1d20+15.)

The whip bounced off Ruby's mystic shield.

"You should have gone back in when you had the chance!"

A quick chant later, she fired a bolt of mystic energy at the demon.

(OOC: Mystic Bolt attack roll - Spellweaver rolled 11 using 1d20+10. MERP)

The demon dodged, laughing, and lashed fire at Ruby's head again-- but missed.

Annoyed, Ruby cast her gem spray again.

(OOC: Toughness DC 27)

The demon was pushed back-- and out of the corner of her eye, Ruby could see Aster doing something, clearly magical, causing strange hell-runes to appear in the air around her.  The gate was starting to close.

"Thanks for the help," Ruby said.

"...I could use a hand," said Aster.  "My magic isn't good at closing gates like this!"

"Sure thing," Ruby said, conjuring some chalk and drawing some symbols on the ground to help with the closing ritual.

Make some kind of Expertise check for magic

(OOC: Expertise: Magic roll -Spellweaver rolled 22)

The hellgate was closing, but struggling to stay open all the while-- something on the other side was still trying to push through!

Ruby gritted her teeth and tried forcing it closed.

(OOC: Expertise: Magic roll - Spellweaver rolled 11 using 1d20+10. Luck reroll. Spellweaver rolled 30 using 1d20+10.)

The gate slammed shut and vanished!

Aster gave a sigh of relief.

"I'm glad that ended quickly," Ruby said.

"Yeah," said Aster.  "The problem is that we don't know why it happened.  I'm sure that someone on this side of the gate opened it, though."

"That's what I'm thinking. One sec," Ruby said and then began to focus on trying to detect trace magics in the air that could lead to the perpetrator,

(OOC: Detect Magic roll - Spellweaver rolled 31 using 1d20+11)

It was a distinctive trace, but what it showed was that this had somehow been a spell set up in advance, and set to activate when, most likely, the caster was nowhere nearby.

"That's annoying. It was clearly someone with a measure of skill," Ruby said.

"Well, unskilled demonologists are still a menace," said Aster.  "So... it could be worse.'

"What mages do you know of in the city?" Ruby asked.