Most played cards in BUG Control:

2 Decks
Chill
8 copies - 4 average
Innocent Blood
8 copies - 4 average
Yavimaya Coast
8 copies - 4 average
Polluted Delta
8 copies - 4 average
Mana Leak
8 copies - 4 average
Impulse
8 copies - 4 average
Pernicious Deed
8 copies - 4 average
Accumulated Knowledge
8 copies - 4 average
Counterspell
8 copies - 4 average
Fact or Fiction
6 copies - 3 average
Hydroblast
5 copies - 2.5 average
Lobotomy
5 copies - 2.5 average
Chainer's Edict
4 copies - 2 average
Masticore
4 copies - 2 average
Naturalize
4 copies - 2 average
Tsabo's Web
4 copies - 2 average
Undermine
4 copies - 2 average
Intuition
4 copies - 2 average
Bad River
4 copies - 2 average
Morphling
4 copies - 2 average