Supplicant

Grounded, Shield 2
When Supplicant enters the battlefield, if it was
cast from your hand create a copy of it.
Whenever a planeswalker you control is dealt
damage, you may sacrifice Supplicant if it is
untapped. If you do, prevent 1 damage to that
planeswalker.
{t} : Sacrifice Supplicant, then add an energy
counter to a creature you control.