It could be to a number of players, and could certainly drive some interest in Vintage as well as shake things up a bit
On averages alone, the sideboard would be: 3 Coral Net 2 Dispel 3 Hydroblast 1 Serrated Arrows 2 Steel Sabotage 1 Stormbound Geist Twelve total cards and perfectly legal under the M14 rules update
Once it triggers, the creature's controller will lose 2 life and you'll gain 2 life when the ability resolves, regardless of whether or not its power is still 4 or greater at that time or whether or not it's still on the battlefield
In this deck, though, he's pretty ok
Engines that bury the table in resources: Rhystic Study, Necropotence, Consecrated Sphinx, Ad Nauseam, Smothering Tithe
Officially licensed Magic: The Gathering artwork Designed for 1000 double-sleeved or 1100 single-sleeved cards in Ultimate Guard Sleeves The perfect storage place for all 10 Ultimate Guard Boulder 100+ of the "Guild Summit" series Removable lid Strong magnetic closure with ZnapClaw locking mechanism on both sides Resistant Xenoskin material Guild Summit series is the perfect storage place for larger collections, a cube, or several deck boxes - for example the ten Boulder 100+ in the guild design