safeguard+ for who

Ant unit that is low in defence would probably appreciate the higher survivability on the enemy phase.Combine it with Armoured Blow,I'm sure they would be much less fragile than they seem.

Laslow and Hinata come to mind.

any enemy phase red sword without a pref wep can make good use of it

Selena, if you really want to go outside meta. But the other suggestions so far are probably all going to work better.