With a 2/2 body, when you draw that second card each turn
All told the removal aspect is more useful to this archetype than the sac outlet which is so poor it barely merits attention
Whenever another nontoken Dragon enters the battlefield under your control, Miirym creates a token copy of it (and if it's legendary, the token isn't legendary!)
Youll want to copy creatures with powerful ETBs for guaranteed value
Game shops will typically buy any card thats worth more than 50 cents or so, but theyre going to offer something called buylist prices. These are considerably cheaper prices than what they sell, so youre going to take a 10-20% hit on the value of your cards if you go this route
Selling entire collections in one go tends to bring in less than selling pieces separately, since bulk lots attract resellers hunting for bargains