If a source would deal damage to you or a permanent you control, prevent half that damage, rounded up
Prized Unicorn is an exception, and is best used when an opponent has enough creatures to block and absorb all the damage Mowu could do
And there seems no home for Emerald Medallion and Pearl Medallion in 60-card formats right now
At the cost of 10 mana and sacrificing Realmbreaker, the player can search their library for any number of Praetors, or Phyrexian bosses, and put them right onto the battlefield to close out any game
But it can block alone, and thats a huge deal
The energy type includes Darkness Pokmon (which consist of Dark and Poison-type Pokmon from the video games) like Umbreon and Grimer, and powers Darkness-type attacks