[Android][2013-2017] 3D action RPG starting in a witch’s room with a blue floating crystal, portal, and knight character

Hi, I’m trying to find an old Android game I played sometime around 2013–2017.

Here’s everything I remember:

• Mobile game (Android, probably from Google Play)
• 3D action RPG
• Third-person camera behind the character
• Landscape mode
• Single-player
• Graphics were somewhat cartoony/blocky, not realistic
• You moved with a virtual joystick
• Camera could be rotated around the character

The most distinctive thing I remember is the starting area:

• The game began in a dark witch’s room/hut/tower
• Wooden floor and wooden furniture
• There was an old witch wearing a pointed hat
• In the center of the room was a large floating blue crystal
• There was also a treasure chest
• A portal in the room led to dungeon levels

Here’s everything I remember:

• Mobile game (Android, probably from Google Play)
• 3D action RPG
• Third-person camera behind the character
• Landscape mode
• Single-player
• Graphics were somewhat cartoony/blocky, not realistic
• You moved with a virtual joystick
• Camera could be rotated around the character

The most distinctive thing I remember is the starting area:

• The game began in a dark witch’s room/hut/tower
• Wooden floor and wooden furniture
• There was an old witch wearing a pointed hat
• In the center of the room was a large floating blue crystal
• There was also a treasure chest
• A portal in the room led to dungeon levels

Other things I remember:

• There were multiple playable characters, but some were locked
• I mainly played as a knight
• The knight wore silver plate armor
• He used a single sword (not sure if he had a shield)
• One of his skills was a spinning attack while moving forward
• Dungeons had a dark castle/hell-like fantasy atmosphere

Things I’m NOT sure about:

• The witch may have been playable at the beginning, or she may have been an NPC in the hub area
• I don’t remember the enemies
• I don’t remember the game’s title at all

I’ve searched games like Dungeon Quest, Arcane Soul, Heroes Call, Eternity Warriors, Tiny Legends, and Dungeon Hunter, but none of them seem to be the right game.

Any ideas?