BW Battle // Tanglespan BW

Bridgeworks Battle (Front): Target creature you control gets +2/+2 until end of turn. It fights up to one target creature you don't control. (Each deals damage equal to its power to the other.)

Tanglespan Bridgeworks - Land (Rear): As Tanglespan Bridgeworks enters, you may pay 3 life.
If you don't, it enters tapped.
{t}: Add {g}.