The full visual spoiler is out, so it’s time for a quick spin through Gatecrash to look for generally detrimental triggers.
- Keymaster Rogue
- Leyline Phantom
- Spark Trooper
That’s it! I’d watch out for Spark Trooper, but things should be pretty clean. Given that there’s a hundred triggers in the set (thanks David Lyford-Smith!), only having three to worry about is pretty good.
There’s one other one that’s a little weird: Voidwalk. As a spell, I think the most common use will be on opponent creatures (to get a blocker out of the way), but as a trigger, it’ll mostly be on your own (pretty rare to blink an opponent’s creature after combat). That makes the return usually something you don’t want to miss and therefore not generally detrimental.
I think Voidwalk is more complex than you indicate here. Particularly in Limited, you will frequently want to exile your opponent’s creatures after combat due to things like +1/+1 counters and auras. I think this should be “generally detrimental” and if the controller forgets to return his or her own creature (much less likely and infinitely less abusable), it’s the opponent’s choice whether to put that trigger on the stack (not happening, obviously). I don’t think there’s a strong reason to not give out a warning for this one.
The downside would obviously be that a judge might intervene when the controller misses his or her own trigger, but that still gives the opponent the choice, and I don’t think it would really alter any games too significantly.
Just food for thought.