I had an idea for a new special Thanos character akin to Taskmaster mechanic, where it will allow you to choose which powers, but this mechanic will allow you to choose which 3 colors you want to bring into the battle
Green Time Stone - 18 AP
You Should Have Gone for the Head - The Mad Titan reverses death itself. Revives a Downed ally and grants them a burst of 30% health.
Blue Space Stone (Passive)
Dread it. Run from it. Destiny still arrives. - If a teammate take more than 4000 damage, Thanos sends teammates airborne, damages enemy team for 3000 and stuns enemy team for 1 turn
Red - Reality Stone 12 AP
Reality Can Often Be Disappointing - Reality can be whatever Thanos wants. Stun target character and removes 1 special tiles (more at higher levels)
(Passive) Red matches deal 150% more damage
Purple - Power Stone (Passive)
The Hardest Choices Require the Strongest Wills - Whenever the enemy makes a match-4 or greater, if you have at least 9 AP in that color (including Team-Up), fire a random friendly power at no cost. If not, gain 1 AP in that color.
Yellow - Mind Stone 12 AP
Your Optimism is Misplaced - Thanos sees your attack coming and makes the necessary adjustments. Places a 3 turn countdown that prevents enemy matches from gaining AP in its color while on the board(max 1 tile)
(Passive) When you make a Match-5 or greater, destroy AP in the enemy’s strongest color.
Black - Soul Stone (Passive)
Balanced, As All Things Should Be - If you have 15 AP in all colors (including Team up tiles) Thanos will snap away half the tiles on the board.