mtg standard card prices Have you noticed how expensive the original printing of Seething Song is??? It's not the only common worth more than you'd think: if you've got a few of these in your bulk MTG / Standard Format

Blood on the Snow Break the Ice Chilling Shade Dead of Winter Draugr Necromancer Drift of the Dead Gangrenous Zombies Grim Draugr Hailstorm Valkyrie Icequake Legions of Lim-Dl Priest of the Haunted Edge Rime Transfusion Rimebound Dead Withering Wisps Zombie Musher

Note the card doesnt have to be drawn by the same opponent who loses the creature

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.) Tabletop Magic Online Price History Tabletop Magic Online

By now the community has had time to try them out, tweak them, and put them through their pacesit appears they have what it takes to succeed with some consistency, but not to excel