Jon has many connections and friendships with other lords whom he can bring into battle with him
(Or vary in their power enough that the user is uncertain what effect the card will produce during any one use.) The ability has cemented in black and is also used in red and artifacts quite a bit
To determine the total cost of a spell, start with the mana cost or alternative cost (such as a miracle cost) you're paying, add any cost increases, then apply any cost reductions
The price wont drop enough to warrant selling now and re-buying later, and I still think these lands will be $20+ again at some point
If another creature enters the battlefield as or becomes a copy of Dacks Duplicate, it will copy whatever Dacks Duplicate is copying and have haste and dethrone
Then, whenever your Dragons attack, you draw a card for each one and may put a permanent from your hand straight onto the battlefield for free