The rules for Aprils cards was: These cards had to be primarily designed to counter a strategy, not enable one Creatures had to meaningfully advance the game beyond their ability no Drannith Magistrate style 1/3s, these cards had to have some purpose in making your opponents lose by conventional, fair means
Heroic has never been particularly popular, since the only way you can safely trigger the ability is with either a combat trick or an Aura, and Brigone is soundly trounced in both spaces
You should use an overhead light in a dark room to spot things like indents and dings on the card which can significantly hurt your chances at a high grade
Four-Colour Control has plenty of ways to counter spells, but can also remove problems with cards like Temporary Lockdown
Well now discuss some of those reasons and provide examples of cards banned for those reasons
Plane - Dominaria The Aether Flues When you planeswalk to The Aether Flues and at the beginning of your upkeep, you may sacrifice a creature