Enchant Niv and then draw a card whenever you get a trigger to deal damage, causing you to deal another damage, and so forth
Creature Vampire Noble Uncommon Suzanne Helmigh 2/2 NOT LEGAL Standard NOT LEGAL Future LEGAL Historic LEGAL Timeless LEGAL Gladiator LEGAL Pioneer LEGAL Explorer LEGAL Modern LEGAL Legacy NOT LEGAL Pauper LEGAL Vintage NOT LEGAL Penny LEGAL Commander LEGAL Oathbreaker NOT LEGAL Standardbrawl LEGAL Brawl NOT LEGAL Alchemy NOT LEGAL Pauper Commander LEGAL Duel NOT LEGAL Oldschool NOT LEGAL Premodern NOT LEGAL Predh Menace (This creature can't be blocked except by two or more creatures.) When this creature enters, if an opponent lost life this turn, put a +1/+1 counter on each other Vampire you control
The big failing of this card is lack of trample
This was especially true in Commander, where the lack of sideboards meant the mechanical pairing didn't work, and the Lessons were too weak and under-supported to justify playing
Is your favorite not on this list
No, you will not cast that game-winning Exsanguinate