So u need to b lucky that TD doesnt attack? Because u need 7 attacks in a row(6 Elements + Chrono Cross). Or does he stop attacking? Need to get my CC fixed and try it
Actually, the TimeDevourer uses the opposite of the element you need. In the beginning, you need Yellow to start the pattern. So, TD casts green elements.
First, you have to build your element grid. Then you have to fill your attack bar (that blue bar, I forget whether it has a name) by defending (maximum is 7.0 I think). Then, immediately after the last TD's attack, use a Yellow element, then a Red element. Then, defend. Since you need a Green element to continue the pattern, the TD will use a Yellow element. But a Yellow element starts a new pattern. So, you continue the pattern immediately (Red, Green, Blue, Black, White). This is TD's turn to attack, but once you have achieved the pattern, it won't move. Now it's the time to use the Chrono Cross!
However, this tactics requires that you put the Chrono Cross in Serge's Level 1 grid, so that you can use it with just 1 element level. It is also strongly recommended that you put elements of different colors (no matter how strong they are) in Levels 1 and 2 of your characters' grids, so that they don't spend many Levels to use them and that Serge will have at least 1 Level left, in order to use the Chrono Cross. So, you must prepare your grid very carefully, so that nothing goes wrong. Good luck