At the beginning of each player's upkeep, Power Surge deals X damage to that player, where X is the number of untapped lands they controlled at the beginning of this turn.
When Rainbow Knights comes into play, it gains protection from a random color permanently.
: First strike until end of turn.
: +0/+0, +1/+0 or +2/+0 until end of turn chosen at random.
The next time a source of your choice would deal damage to you and/or creatures you control this turn, prevent that damage. If damage from a black source is prevented this way, you gain that much life.
Light creates shadow; light destroys shadow. Such is the transience of darkness.