I don't know who you are.
I don't know what you want.
If you are looking for ransom, I can tell you I don't have money.
But what I do have are a very particular set of items; items I have acquired over a very long career.
Items that make me a nightmare for controllers like you…
This may have been discussed elsewhere here without my seeing it, but lately I've been entertained by the interaction between Voidcrystal Weapons and the Exodus Knife.
In most situations, this is not going to be close to tactically optimal, but sometimes you just need to settle something mano-a-mano. Maybe there’s an enemy controller wreaking havoc on your party, negating your usual defender tricks. Maybe you’ve got a blood oath sworn against some particularly nasty baddie, and you want him all to yourself…I don't know, maybe he took your daughter or something.
Minor Action: Hit the Target
Doesn’t matter how, just be sure to use your trusty Voidcrystal Weapon. (If you don’t have minor action attacks by low paragon when this comes on line, you probably have no business Taking in the first place.)
Free Action: Activate
Power (Teleportation) Daily (Free Action)
Use this power when you hit a creature with this weapon. The target disappears from the world until the start of your next turn, at which point the target reappears in an unoccupied space of your choice within 3 squares of you.
Free Action: Say something suitably dramatic, so that allies and enemies alike are now aware of the degree of unbridled bad-assery going on right here as a the BBEG disappears from the world. Seriously, "disappears from the world." That's not even flavor text.
Standard Action: Activate
Power Daily (Standard Action)
When you use the exodus knife to trace a doorway onto a solid object, it opens a portal into an empty extradimensional space 4 squares wide, 4 squares high, and 4 squares long.
While the door is open, anyone can enter, see into, or affect the extradimensional space. Only creatures inside the space can open or close the door (a minor action). Once closed, the door becomes invisible to anyone outside the extradimensional space. Creatures on the inside of the closed door can see out, but those outside can't see in. Creatures on one side of the closed door cannot affect creatures on the other side.
The extradimensional space lasts for 8 hours. Any creatures still in the space when the effect ends reappear in the closest unoccupied squares outside the door.
Move Action: Step through your portal into your private 4x4 torture chamber. (Technically, you can even have all of your allies join you, and the last one in shut the door, but that’s hardly sporting.)
No Action: The Voidcrystal Weapon effect ends, and your target reappears “in an unoccupied space of your choice within 3 squares of you,” which happens to be the far corner of your extradimensional space.
Free Action: Turn to your prey and say something really sinister and tough-talky like “Don’t worry, this won’t take long.” or “I bet you can squeal like a pig. Weeeeeeee!” Note: It’s absolutely vital to plan this ahead of time; leaving it to the spur of the moment is an invitation for disaster.
Minor Action: Close the door…
You're now alone(ish) with your target, completely cut off from the rest of the battlefield, Thunderdome-style. No help is coming for either of you. Get to it, because only one of you is coming out.
(Note: Your target can open the portal with a minor action like anybody else inside the space. Preventing this is easier if you've got allies in there with you (boo!), but is usually achievable in any event.)