Scalenex said:When resisting attacks or taking ability score checks, use the best stats between the rider and Ripper.
Pinktaco said:Page 83 – Monstrous Cavalry.
In thesecond paragraph, replace“All thecavalry rules…with
oneexception – monstrouscavalry always usethe highest
Woundscharacteristic…” with “All thecavalry rules…with
two exceptions – monstrouscavalry always usethe highest
Toughnessand Woundscharacteristics…”
http://www.games-workshop.com/MEDIA_CustomProductCatalog/m2710122a_WARHAMMER_RULEBOOK_v1.6.pdf
page 3, right side written in pink.