Sika, Guardian of the Walls

Whenever a source you control would take damage from a source an opponent controls, you may pay {w}{w}. If you do, you may have Sika, Guardian of the Walls take that damage instead.

When Sika, Guardian of the Walls would take damage, you may pay {2}{w}{w}{w}. If you do, prevent all damage that would be done to Sika, Guardian of the Walls this turn

"The stone walls of the Kreis have endured for centuries. They will not fall on my watch."