Yunobo, Young Goron

Yunobo, Young Goron enters the battlefield with
four quest counters.
At the beginning of combat, you may tap Yunobo
and one other creature, if you do, remove a quest counter from Yunobo.
When you remove the last quest counter from
Yunobo, search your library and/or graveyard for
a card named "DivineBeast: Vah Rudiana", and
put it onto the battlefield.