Planeswalker, Instant, Dragon..
Acquired Price Override: (Total Acquisition Costs / Number of Cards) = avg price
Shift + Delete: Clear Item Search
Shift + Backspace: Clear Item Search
ESC: Minimize and Clear Item Search, Advanced Search, and Set Search
Enter: Shortcut to Open Page
domain â€” creatures can't attack you unless their controller pays x for each creature he or she controls that's attacking you, where x is the number of basic land types among lands you control.