Legma's Legs

Your legs give you the ability to achieve a greater speed than normal and are activated only upon combat being initiated. When the initiative is asked to be rolled you will let your DM know what Mach Speed you are going to choose before rolling. When you add up your initiative and your roll is a 0 or lower you lose your turn and are unable to use any actions, reactions, and any Dexterity checks must be rolled at disadvantage this round only. In round 2 you are able to choose when to take your action and from that point on, that will be your place in initiative. 

Mach 1: Add -3 to your initiative for 5ft of movement speed. 

Mach 2: Add -6 to your initiative for 10ft of movement speed.

Mach 3: Add -9 to your initiative for 20 ft of movement speed.