Dangerous Tomboy Girl

Haste, flying.
{p/b}{p/b}{p/b}{p/r}{p/r}{p/r} —Give DTG +3/0 until end of turn.
When DTG enters the battlefield flip a coin for each mana spent to cast DTG. For each coin that lands heads deal 1 damage to a random player, for tails deal 1 damage to yourself.
Whenever DTG would deal combat damage prevent that damage, shuffle DTG into your library, and gain DTG counters equal to the damage prevented in this way.
When you draw DTG you may reveal her, if you do convert your DTG counters into explosiv