Obi-Wan Kenobi

Partner with Luke Skywalker
Whenever you pay mana to activate an
ability of a permanent you control, you
may and pay 4 life. If you do, copy that ability.
{t}: Tap target nonland permanent an
opponent controls, then you may pay 2 life any
number of times. Copy this ability for each 2 life
you lost this way. Obi-Wan Kenobi doesn't
untap during it's controller's next untap step for
each time this ability is was copied.