Divine Deflection is the source of the new damage, so the characteristics of the original source (such as its color, or whether it had lifelink or deathtouch) don't affect this damage
In addition to being a slight rewriting of the classic Jingle Bells line, the part that says "sing a slaying song tonight" is modeled on the fact that "sleigh" and "slay" sound phonetically identical to each other, and the effect involves you 'slaying' some creatures (or at least attempting to)
This is very useful because if theres a card thats rising in price that you might not be using, you might consider selling it for extra tix
I didnt end up adding it after my initial pass, but it could be worth a single slot somewhere
Both of them are nice, and from different angles
The win would have been anticlimactic and if the attempt failed, I would have been left with an artifacts deck with no artifacts, so I'm glad I decided to go for a longer game