During an apocalypse match I managed to borrow a super awesome Forge world Tantalus and for the heck of it I put 7 Grotesques with Urien and vect in it with Eldrad rolling up behind it with a Harlestar. Rolling telepathy until I got invisibility I then switched to divination in time to get prescience and 4++ power. Can I use invisibility on the Tantalus? I had LOS to it and everything. Well in the game I did and turbo boasted it to get a 2+ cover save! All the while cutting open an enemy jetseer and a few warlocks *misfortuned*. Was I allowed to do this, it probabilly wouldn't matter in an Apoc game but in a real game albeit a LOL-y one to run that Tantalus, could I do this? I sounds like a REALLY good way to get the Grots into the enemy army!
Also in a different game VS. Fateweaver tzeentch daemons eldrad practically won the game by himself. By that I mean runes of warding won it for me. A little complication came up when fateweaver rolled a double 6 and a 2. This means he takes perils from runes of warding because he rolled over twelve but I also though he would take a SECOND perils from double 6. The RAW don't specify that you have to roll only a double 6, it says when a double 6 is rolled. He wasn't sure, so we rolled off and he took double wounds, making him an easy target for a venom! But how should we of done that? Was I right, I don't see anywhere where it says you can only take a single perils.