Here are several rules from last game.
JJ typing, Swooping 40k6 pg 49
It must move at least 12" and move up to 24".
Context: Shawn asked how far daemon prince can move when it swooping. I thought it was same as a Flyer 18-36. Nope.
Jetbike 40k6 pg 45
Turbo-boosting Jetbikes move up to 24".
Context: Shawn asked how far jetbikes can turbo-boost when considering moving Tzeentch Screamers.
Rending 40k6 pg 41
Similiary, if a model makes a shnooting attack with a weapont hat has the Rending special rule, a To Wound roll of 6 wounds automatically, regardless of Toughness, and is resolved at AP 2.
Castellan Crowe; Master Swordsman Grey Knights Codex 5th ed pg 42
His close combat attacks have the Rending special rule, and will rend on a To Wound of 4 or more.
Context: This one made me feel very foolish. It was time for Crowe roll to wound against a daemon prince. I thought because of Crowe's S 4 he had to roll a 6 to wound daemon prince's T 6. Shawn and his boy Aiden were practically beating this rule into my senseless head. Wasn't til I read Rending and confirmed their information that I realized I've never used this rule. This is the second rule Aiden has told me about Crowe. Thanks, Aiden.