Players discard cards and sacrifice creatures the same way
"Unlike cards with Madness, [Oskar] does not reduce the cost of the discarded cards
How to Play Magic: The Gathering Setting Up Your Play Area How To Read A Magic Card Card Types Casting A Spell Starting a Game Taking Your Turn Tapping Combat The Stack Activated Abilities Triggered Abilities Counters Ending a Game Calendar and Events RELEASE DATES WPN IN-STORE PLAY EVENTS START SEPT 19th Sling webs and Thwip enemies, or is it the other way around
Some of the best cards to pair with Kenrith, the Returned King include: Training Grounds will dramatically reduce activation costs for Kenrith Biomancer's Familiar provides another source of activated ability cost reduction Agatha of the Vile Cauldron can actually drive all of Kenrith's abilities to just a single mana cost Illusionist's Bracers copies Kenrith's powerful activated abilities 3
So, its only natural that the Trading Card Game introduced their own spin on the formula
To investigate, simply create a Clue token, which are artifacts with the Clue subtype