What is telling you to play the card next to a target? A card effect you say? Can a card effect interact with an isolated hero?
A card effect can't effect an isolated hero, the effect of playing it next to a hero affects the card being played and the way you play it, that is all.
The argument that card/hero interactions are not predicated on card effects is baseless and wrong. Flat out wrong.
There is no card that tells you you get to use a power each turn, yet you do. There is no card that tells you to play a card during your play phase, but you do. We do things in the game based on rules, and card effects. Not everything is a card effect. A card is not played by its own effect, it is played because that's what the rules state you do. Most Hero/card interaction is predicated on card effects, not all. That has nothing to do with this debate though.
The targeting of the Isolated hero to place the card next to IS a card effect. Would you like to argue otherwise? You are not just placing it somewhere in the middle of the table randomly. It is being attached and associated with a specific target that YOU must name from the very start.
Yes it is a card effect, and that effect is affecting the card Twist the Ether, and the person playing it. That is all. The rest of Twist the Ether's effect affects the targetted hero, but they are seperate effects. One of the effects is usable through isolated hero, one isn't. I'm not saying you can alter their damage, just that you can play the card. Just like Chrono Ranger could use Temporal grenade if he couldn't deal damage, two different effects.
Really now? There are tons of differences. What if you need to destroy [H] hero cards? Sure makes a difference then if it is in play or not.
If you have to destroy (H) cards that choice as to destroy Twist the Ether would be Visionaries choice, not the target the card is next to. So that still doesn't affect the target. If the Isolated Hero has to destroy cards they could not destroy Twist the Ether because it isn't theirs.
No effect until triggered? You trigger the first effect the second you play it. That first effect would be the first sentence, you know, the one where it tells you to pick a target to play your card on.
Again we are talking about effecting an isolated hero. Isolated Hero does not prevent effects that do not affect the isolated hero. The first effect does not effect the hero it is played next to. The second effect is the only effect that affects another hero, and that one would be stopped by Isolated Hero.
Also the card does not tell you to target someone. It says "Play this card next to a target." That is not targetting them for some effect, it is an effect that alters where the card is played. The effect only affects the card being played and the player putting it into play.