Lightbringer, Sword of Tyr

Equipped creature gets +2/+2 and first strike
When equipped creature is tapped, it gets hexproof
When equipped creature deals combat damage to a player, roll a d20, on a 19-20,
create Try, Aspect of the Blade, a 7/7 White Blue Red Legendary Creature Token with Indestructible and Vigilance.
On each failed roll, roll an addition 20 next time.