Olivia and Edgar, Betrothed

Entwined—At the beginning of your upkeep, put
two +1/+1 counters on upto two creatures you
control.
Flying, First strike, Haste
Whenever you cast a Vampire spell, create two
1/1 black Vampire creature tokens.
Whenever Olivia and Edgar attack, put a +1/+1 counter on each Vampire you control.