Truth Warden

Perseverance (If this creature is sent to the Graveyard, you may put it back into play if a creature damaged by it is sent to the Graveyard during the same turn)
Whenever Truth Warden blocks or is blocked by
a non-white creature, exchange Truth Warden's Strength and Toughness until end of turn. If Truth Warden's Toughness is reduced below 1 this way, it is reduced to 1 instead.