Seraphina, Hellbound Bard

{u}{t}-Target creature is unblockable until the start of your next upkeep.
{r}{t}-Target creature is goaded until the start of your next upkeep.
Soul Treasurer
Whenever a creature dies, add a soul counter to Seraphina, Hellbound Bard.
Remove a soul counter- Untap Seraphina, Hellbound Bard.