Creatures you control have haste. (They can attack and {T} as soon as they come under your control.)

Mass Haste

Format Playability
Standard Not Legal
Modern Unplayed
Legacy Unplayed
Commander Staple 700 Decks
Vintage Unplayed
Pauper Not Legal
Vintage Cube Not in Cube
Legacy Cube Not in Cube
Modern Cube Not in Cube
Sets USD
M13 R Magic 2013 $ 0.77
6ED R 6th Edition $ 0.97
7ED R 7th Edition $ 0.86
WTH R Weatherlight $ 0.93

Recent Legacy Decks

Recent Commander Decks