Sidar Jabari is a rare Legendary Creature — Human Knight card from Mirage (MIR), collector number 39. Current market price: $0.76, TCGplayer market prices via Scryfall.
Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.) Whenever Sidar Jabari attacks, tap target creature defending player controls.