In your opinion, which has save you more often than you think? Invicibility, evade, or the damage cut group?
For me, it depends on the opponent and the type of playstyle i want. If my main dps dies, then my team becomes the stall team with dss waver ,damage cut group, or waver, merlin, skadi.
If the battle still has my main dps, then most likely invul will come in handy, but evade has its places too, but no where near as often as damage cut and invul.
You would be surprised at the amount of times a damage cut group has saved my team from defeat by reducing the oppenents damage to the hundreds, not the thousands they can dish out.
(Single servants evades dont count)