The name of the card is an allusion to the traditional Christmas carol called "Deck the Halls", as well as a meta-reference to "topdecking" which refers to playing a card on the same turn you draw it, often in a way to swing the game in your favor (which also provides its connection to the miracle keyword)
Trading your 2/2 with something of theirs and having a free land at the end of it is decent enough
Silverquill, the Disputant Silverquill, the Disputant gives casualty 1 to your instant and sorcery spells, which is pretty powerful, considering that you can sacrifice a token to double any spell effect
Related Whats more, the monarch token is easier for you to keep or reclaim thanks to several of your Creatures being unblockable, allowing you to deal damage to any player who takes the monarch token from you
In order to counteract this, you'll want to focus on value-building effects so that you get additional benefits from gaining life, like extra card draw and growing creatures