Dummy spell that has no animation?

[LittleFuryBugs]

Is it possible to make it so the Channel spell has no animations and doesn't interrupt what the unit is currently doing?

 

[Uncle]

Nope. Only Instant abilities can do that.

Instant cast abilities other than berserk?

You can come close to mimicking the "Instant" behavior for non-Instant abilities by changing your unit's Cast Point / Cast Backswing to 0.00 but the spell will still interrupt orders. There are ways to remember the unit's last order, and re-issue it after casting the spell, but there will still be a very slight interruption.

 

[IcemanBo]

This might be interesting, too, in case you want to know there are orders that are instant, or also orders, that will queue the current order, like avatar/bearform: OrderType