Christian, Diviner of Eternity

{2}{u}: Change the text of target permanent by replacing all instances of one color word with
another or one basic land type with another until
end of turn.
Whenever a permanent's color would change
or a basic land type changes, put a knowledge
counter on Christian
Remove four counters from Christian: You get an additional upkeep and draw step after this step.
Remove two counters from Christian: Target
creature can't attack you this turn.