Link, Armed Adventurer

Whenever Link enters the battlefield or attacks, venture into the dungeon
Whenever you complete a dungeon, you may pay{r/w}. If you do, search your library for an
Equipment card, reveal it, put it into your hand,
then shuffle. if you've completed three or more dungeons, you may instead create The Master
Sword, a legendary colorless Equipment artifact
token with "Equipped creature gets +3/+0 double strike and trample" and equip {3}, then attach it to
Link