Most played cards in Ad Nauseam Storm:

3 Decks
Peer Through Depths
12 copies - 4 average
Lotus Bloom
12 copies - 4 average
Angel's Grace
11 copies - 3.67 average
Ad Nauseam
11 copies - 3.67 average
Ponder
11 copies - 3.67 average
Chrome Mox
10 copies - 3.33 average
Rite of Flame
8 copies - 2.67 average
8 copies - 2.67 average
Thoughtseize
8 copies - 2.67 average
Polluted Delta
8 copies - 2.67 average
Manamorphose
8 copies - 2.67 average
Gemstone Mine
8 copies - 2.67 average
Hurkyl's Recall
7 copies - 2.33 average
Slaughter Pact
7 copies - 2.33 average
Seething Song
7 copies - 2.33 average
Pact of Negation
7 copies - 2.33 average
City of Brass
7 copies - 2.33 average
Stifle
6 copies - 2 average
Pentad Prism
6 copies - 2 average
Watery Grave
5 copies - 1.67 average