Othedeus, the Debt Collector

{p/c}: target creature you control get +5/+5
until end of turn,
if that creature dies lose half
your life rounded up,
if that creature is legendary,
lose half of starting life total.
Any player may use this ability.
Pay 10 life or 5 {b}: control target player
until end of turn, you may
not cast spells from their hand.