Forum:Vaieon Sigma-Kayest

When Vairon Sigma is the only monster i control and attack so its effect activates, and i equip it with Rod of Silence - Kay'est, can my opponent activate book of moon when i attack so it will be set or will kayest be already on the field when i attack so it will negate Book of MoonOtakuTaiga (talk • contribs) 17:18, January 14, 2011 (UTC)