Scootloo

When Scootloo enter the battlefield, create a skateboard and attach to Scootloo.
(It's a Legendary artifact with equip{1},the attatching creature gets +1/+1,has flying and haste.)
Nice move,kid!
Whenever Scootloo attacks, flip a coin, if you win
the flip,target creature gets +1/+1,if you lose the flip,tap target creature and goad it.
{1}{r}{w},Transform Scootloo. If an opponent controls more creature than you, this ability cost {1}less to cast.