I don't know if this hasn't been mentioned yet, but I've had my copy patched to the latest Manalink, and I noticed 2 things with Shandalar now.
1. I can't trigger
Land Tax's upkeep effect (I made sure to have less land than my opponent)
2. I can't use
Icy Manipulator out of my turn (because I wanted to tap an enemy critter during enemy's end turn).
3. I can't interrupt an enemy's upkeep or discard phase. Heck, I can't even interrupt my own. The cards that allow me to go yellow (which means I should be able to do *something* with them), but the game skips through the phase anyway.
4. I can't interrupt battle damage effects with things like:
Samite Healer's damage prevention (Healer must be out of battle to prevent damage), Pumping
Mishra's Factory by using its own ability on itself so that it'll survive 2 damage (Factory must be out of battle to be pumped). I don't recall the rules having changed to disallow it...