As a creature its easy to recur, and often entire games would revolve around a two-drop
This version of Mable is illustrated by Airi Yoshihisa, and they do a fantastic job at making Mabel look absolutely heroic with her huge, burning sword and leaf-shaped shield
Sarkhan Vol is another planeswalker that makes creature tokens, but for the first time as its "ultimate," the -6 ability on the card
All these little things are done in excess of fixing your mana, for no mana invested: Its the very definition of cards with an over-sized impact compared to their mana cost
They may be cheaper to cast than the likes of Rampant Growth, but theyre much more susceptible to removal
The World Championship functioned like a Pro Tour, except that competitors had to present their skill in three different formats (usually Standard, booster draft, and a second constructed format) rather than one