Forum:Doomcalibur and Barbaros

I've 2 questions. 1st is if there is a face-up Skill Drain on the field and I control Doomcaliber Knight, then attack a face-down Sangan with it, must I tribute Doomcaliber Knight to negate the effect of Sangan?

2nd is if Beast King Barbaros was normal summoned without tribute, then targeted by Forbidden Chalice, will his attack become 3000 or 1900 during the end phase?

thx

--Cl0v15 (talk • contribs) 02:04, June 28, 2010 (UTC) cl0v15