Hooray! I have had a go at the 23 crossovers thing! I saw someone else's and thought it looked like a laugh - the joke was on me. It was ridiculously hard for me to come up with 23 crossovers, but I managed it eventually. See if you can guess them!
Disclaimer; not mine!
"And so the warlock fell in love with the prince."
"What a stupid prince."
"What a sick, masochistic warlock."
"Young warlock, you must listen very carefully; I shall say this only once."
"Eeeeaaaagle!"
"No, Sire, my name's Merlin."
"I've been trained to kill since birth."
"Yet you're about to get your butt kicked by a fourteen-year-old Avian-American girl."
"Uh, I'm Merlin..."
"Brilliant! Absolutely fabulous! Whaddya think, Donna?"
"Shouldn't you have a beard and a pointy hat or something?"
"On the behalf of my Rider, I would like to say that you two are a lovely couple."
"Merlin? Is that a dragon?"
"Hey, Arthur? Why are your knights dancing on tables and singing about ham, spam and jam?"
"Look. I'm Prince Arthur of Camelot. Savvy?"
"We don't want to be 'assimilated', do we Merlin?"
"No!"
"That is irrelevant."
"Merlin, only you would be stupid enough to follow a talking white rabbit, and drag us both down the hole after it!"
The girl with the lacy sapphire tattoos watched Arthur curiously, the four elements swirling around her at her command.
Merlin grinned cheekily at Arthur, vanishing then reappearing again constantly, apparently travelling to a different location every time.
"These violent delights have violent ends," Merlin murmured against Arthur's lips as the battle raged around them.
"I don't think we're in Camelot anymore," Merlin whispered. Arthur nodded in agreement.
"Merlin, how on Earth did you know that?"
"Elementary, my dear Arthur."
The dark-skinned, unshaven man before them swayed drunkenly, the ground beneath his feet cracked from the force of his landing.
"Merlin's beard!"
"Merlin?"
"Yes, Morgana?"
"Never grow a beard."
The wolf at the boy's feet whined uneasily, and the boy whined back, scratching at the grey fur, dark eyes wary.
Two boys fell through the anomaly, scaring the life out of the team, both of them dressed in medieval garb.
"She is coming!" Morgana gasped. "The fated one, the Fire Lily, she is coming!"
"I am your angel of music," Merlin whispered in Guinevere's ear, even as she reached desperately for Arthur.
"Halt, Halt!" Merlin called cheerfully to the grizzled old stranger.
"No, Merlin. I am your father."