mtg what is a showcase card Showcase: Duskmourn™ you may cast it for as long as you control this creature Magic The Gathering Assassins Creed

You simply have the ability to say no to whatever your opponent tries to do while burying them in card advantage

whenever he banishes another character in a Challenge, you gain 2 Lore points

Rotting Regisaur Pre-2010 or so, Rotting Regisaur would have had a more restrictive drawback--I'm thinking specifically a Masticore-style "at the beginning of your upkeep, discard a card or sacrifice Rotting Regisaur." Instead, M19 gave us a more modern design, which doesn't require a discard if you're hellbent and prevents the miserable feeling of top-decking a Masticore when you're desperate for a creature and out of cards in hand

Suddenly, all your colorless creatures get +3/+2, and it also adds two manifested cards to the battlefield, which will be 5/4s to start with

Riku of Two Reflections In a similar vein to Yarok, the Desecrated, Riku of Two Reflections takes the usually slow build-up of energy counter generation and kicks it into overdrive by doubling up on the spells we use to generate and spend those counters