What are Arcane Tremors?
Arcane Tremors are a new overworld event type added to Diablo 4 in Season 3: Season of the Construct.
Where are the Arcane Tremors?
Arcane Tremors will appear near entrances to the Vaults in the overworld.
Players will encounter enemy Consrtucts which must be destroyed but also activate the Arcane Tremor Cores which will draw out more of Malphas's more powerful Constructs. These Cores can be acquired from Obelisks.
Depositing Cores
Once players have collected enough cores, they can be deposited in a brazier to challenge one of the Heralds of Malphas.
Rewards
One reason to undertake these events is to receive the reward of the Pearls of Warding which are used inside the Vaults. These Pearls are used to acquire Zoltun’s Warding blessing while in the Vaults. The more of these you collect, the more you can stack at the statue of Zoltun Kulle within the vaults.
Arcane Tremors are also an excellent quick and easy way to acquire Governing and Tuning Stones.
If there is a group of players around a Brazier, you can join in their fight if they activate it and you will also recieve the reward. This is quicker than running a Vault if the Brazier is being continually activated.
Legendaries will also drop from the Herald of Malphas when it is defeated.