Now, if you consider the Arrow card, which does 10% attack speed for 15s (which can be doubled either with Royal Road or Time Dilation, or raised to 15% with Royal Road), you reduce the cast/recast timers by 0.25 (this can get less efficient if the targets get skill or spell speed). This means that in the 15 seconds, the DPS can use 6/12 skills in 15/30s without the card and 6.7/13.3 skills with the card. Since the Haste buff does very little to DPS like SMN and it scales down when the target already has much speed (NIN and MNK), and some DPS players say it can mess up their rotations (DRG), the uses of the speed buff are very restricted and in some party compositions one extended Arrow card can do more in 30s than Selene can do in 4 minutes.