Cheapest priced copy (Legions): $0.35 at Card Kingdom, near mint, their price list as of .
Deftblade Elite 
Creature — Human Soldier · 1/1 · Common · Legions · #12
Provoke (Whenever this creature attacks, you may have target creature defending player controls untap and block it if able.)
{1}{W}: Prevent all combat damage that would be dealt to and dealt by this creature this turn.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern