Sukuna's Finger

The "legend rule" does not apply to permanents
you own named Sukuna's Finger. This
permanent cannot be sacrificed.
When this artifact becomes tapped, the player
who controls the artifact loses 2 life. The player
who owns the artifact, gains 2 life.
If mana generated from this artifact is used
to cast a spell, Ryomen Sukuna gains
protection from that spell.
{t}: Add one mana of any color.