Tatiana, Orzhova Fixer

Flying, double strike, lifelink
When Tatiana enters the battlefield, you may
put a death mark counter on target creature
Creatures with death mark counters have "At
the beginning of your upkeep, sacrifice this creature unless you pay {3}"
"So the Dimir have been avoiding payments again,
eh? Tats, I need a favor"- Teysa Karlov