If you really want to, you can discard two artifact cards
I have called her one of the best planeswalkers ever printed for casual, used her as key cards in decks as far away as Oath of Kaya up through a Commander deck just yesterday
If all players in the game agree to it, that rule becomes true for this game
The graphic they added to the Mystery Booster packs had a square background, and the one they used for The List seems to have a rounded background, which creates a telltale difference in the shape of the cards border as you can see on Chatter of the Squirrel and Ancient Den as well as subtle changes in its placement on new border cards, as seen on Boros Challenger
Legendary Creature - Rogue Time Lord Saheeli's Directive Improvise (Each artifact you tap after you're done activating mana abilities pays for .) Reveal the top X cards of your library
Great Unclean One makes your opponents lose life each turn with the potential to put tokens into play