Joven and Chandler [Unknown Event] Mountain whenever a creature an opponent

whenever a creature an opponent controls blocks

the answer may lie in joining the crew of the *Weatherlight* as they seek to rescue their abducted captain Sisay

Activated abilities of sources with the chosen name can't be activated unless they're mana abilities

Set: Unhinged Type: Legendary Creature — Human Designer Rarity: Rare Cost: {3}{U}{U} You may play cards as though they were other cards of your choice with the same mana cost

If there are three or more depletion counters on Decree of Silence

Joven and Chandler [Unknown Event] Mountain whenever a creature an opponentSet: Unknown Event Type: Legendary Creature Human Rogue Rarity: Common Backup 2 (When this creature enters the battlefield, put two +1 +1 counters on target creature. If that's another creature, it gains the following abilities until end of turn.) Haste Whenever this creature deals combat damage to an opponent, destroy target artifact that player controls.