Like its fellow creation Pokemon, the chances of pulling gold crown Dialga ex in the fourth or fifth slots of a regular pack are 0.020% and 0.080% respectively, regardless of which of the two pack types players choose
We are given the percentages, and the number of options, and then its just division (odds/# of cards) and then take the reciprocal for the number of packs required to open a specific card
Second, Snapping Drake is a better card for Limited, and blue has some recurring Limited issues that forces us to push areas in blue common that are good in Limited (counterspells are not that good in Limited most of the time)
The trouble is that Charix needs even more toughness buffs or two turns to finish someone off
There are also five planeswalkers with borderless treatment, and all seventeen of these cards can be found in Draft, Set, and Collector Boosters