Fits perfectly: Magic: The Gathering (MTG) Ideal for Commander, Modern, Standard, and Cube Drafts
Freerunning is a new mechanic introduced that offers an alternate casting cost for a card if youve dealt damage to player this turn with an assassin or your commander
Plus, some decks just want critical mass of these effects
You'll probably want to play a bunch of sagas in a Yuna deck, but if you wanted to get cute with it, you could also take advantage of a sacrifice outlet and cards that come with tons of counters like The Millenium Calendar or Dark Depths
With 2 of them, you can Xyz Summon Exosisters Magnifica and perform an exorcism through consecutive attacks. RESCUE-ACE This Rescue-ACE Deck poses a major threat with its Spell and Trap Cards
Start with Phyrexian Altar and Twilight Diviner in play, and Felidar Guardian in the graveyard