Look for a high-rarity card (3-diamond or higher) that you have at least three copies of
#29 Ensnaring Bridge - Silver Age Ensnaring Bridge can outright defeat many decks on its own, because it can shut down the attack step
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)
So, if youre reading for a friend who wants to know if she should apply for a job opportunity abroad, and as you shuffle, you begin to worry about everything you need to get done this week, you could send a mixed energy to your cards
The combination of colors allows for a wide range of spells
BUT Rustys guide was always a really nice intro and solid foundation in an article