Vantage, Sniper Savant

When Vantage, Sniper Savant enters the battlefield, create Echo, a legendary 1/2 black
Bat creature token with flying.
As long as you control an Echo creature token,
Vantage has flying.
{b/r}, {t}: Put a bounty counter on target creature. Whenever a creature with a bounty counter on it
is dealt combat damage, double the damage.