The best way to give yourself a chance is to open more packs from the set and if you are going to do that, factory sealed product from a trusted UK source is the only way to ensure your packs are genuine
A creature card with changeling is just as much an Elf, a Dwarf, a Sliver, a Goat, a Coward, and a Zombie as it is a Shapeshifter
Theres also a visual appeal that might account for this, but the highest factor is the weighing aspect
If this card is destroyed by battle, or if this card in its owner's possession is destroyed by an opponent's card effect: You can target 1 card your opponent controls
The ability that defines Avalanche of Sector 7's power applies in all zones, not just the battlefield
The delayed aspect of the original cantrips stemmed from the team's fascination with one card Urza's Bauble