Since spellcasting is a core mechanic of Mage Arena, you cannot always rely on your base spells for attacking enemies. Sometimes, you will randomly come across more advanced spell pages that unlocks better spells. The Dark Blast, dubbed the Biden Blast, is one of the more powerful spells in the game. This guide will explain how to get this spell and how to use it in Mage Arena.
Dark Blast Spell Guide in Mage Arena

Besides the spells in your existing spell book, some unique and more powerful spells are obtained while scavenging. By exploring dungeons, towers, and crypts in Capture the Flag mode, there are chests at the very top or at the very bottom of the structure. Unlocking these chests will give you random rewards, which includes the Dark Blast spell page.
Another way to find the spell page is to play in Death Match mode and break pots, vases, and other breakable items. The drop rate for the Dark Blast spell page is random, so you have to keep looking to find it. Once collected, this page will be automatically added to your spell book to be used whenever you wish.
How to Use Dark Blast

Like all spells in Mage Arena, spells are activated through voice chat. While holding the spell page by pressing the E key, say the words Dark Blast clearly. If saying Dark Blast doesn’t work, saying Biden Blast also works, with more emphasis on the Blast. If this still doesn’t work, reset your voice setting by pressing the Esc button and selecting the reset voice setting option.
Dark Blast eliminates most obstacles standing in the way by releasing a powerful purple beam that goes through walls and enemies within its path. This is a great way to reduce enemy HP or even kill them. This spell is best used when you encounter crowds hiding inside buildings, as it will one shot everyone within the vicinity.