The reprint value is fine but not great, and the mana base is strategically competent but super dorky in terms of value
PvE mode is where you'll gain most of the resources you need to open more cards
Adeline, Resplendent Cathar Adeline, Resplendent Cathar Ainok Strike Leader Angelic Arbiter Bontu the Glorified City of the Daleks Cool but Rude Eivor, Battle-Ready Endless Foot Assault Eriette of the Charmed Apple Far Fortune, End Boss Fast Forward Fell Beast's Shriek Frenzied Gorespawn Furygale Flocking General Kreat, the Boltbringer Glass-Cast Heart Hazoret the Fervent Invasion of Amonkhet Kaito, Dancing Shadow Kardur, Doomscourge Krang & Shredder Life of the Party Mirri, Weatherlight Duelist Mishra, Claimed by Gix Nihiloor Pursued Whale Sandswirl Wanderglyph Seeker of Slaanesh Soaring Thought-Thief Sontaran General Stensian Sanguinist The Kingpin of Crime The Second Doctor Trove of Temptation Within Range
As for that other piece of Oracle text, its not so much of a joke as it is a way to prevent a joke from being repeated ad nauseum: In most cases where the value of X isnt defined in the text of a card, its controller chooses the value of X
