Thestalos's effect... does it work while macro cosmos is on the field? Yes, it can. However, no damage is inflicted because the card is not discarded to the Graveyard. Next time, ask those type of question in the forum: [[Forum:Yu-Gi-Oh! Ruling Queries]] [[User:Blackwings0605|Blackwings0605]] ([[User talk:Blackwings0605|talk]]) 04:45, June 10, 2010 (UTC){{Talkheader}}
