What grade do most Japanese Pokemon cards get
If you cast a creature spell this way, it gains haste until you lose control of that creature (or, in rare cases, you lose control of the creature spell while it's on the stack)
This means it's not possible to cheat creatures into play out of nowhere (which madness can do), but it also means you're granted more flexibility, because you can cast a spell for its mayhem cost at any point during the turn in which it was discarded (rather than having to choose immediately as per madness rules)
UR Ultra Rare Limited Limited Called by the Grave X SPELL Quick-Play Target 1 monster in your opponent's GY
In Modern, this card can be a consideration in Amulet Titan decks worried about [Card]Damping Sphere[/Card], but likely a true powerhouse in TitanShift decks because of the ability to ramp into a Titan and establish easier lethal Valakut triggers
Archangel of Thune buffs your whole team to the extreme if it survives long enough to see a few Soul Warden triggers