Arcane Dynamo is a 6 Mana Cost Rare Neutral Minion card from the The Boomsday Project set!
Battlecry: Discover a spell that costs (5) or more.
We ran out of jars, so we started putting brains in other stuff.
Arcane Dynamo Card Review
Important thing to keep in mind that Discover can only give you cards from your class, as well as neutrals. And since there are no neutral spells, it will always show 3 spells from your own class. And given that most of the classes don’t have many 5+ mana spells, this card will be very consistent. Just for example, Rogue has only three 5+ mana spells right now, so it would always offer those three (Lesser Onyx Spellstone, Vanish and Sprint). It will get two more in the upcoming expansion – Myra's Unstable Element and Necrium Vial – but it will still be 60% chance to get exactly the one you want, or 80% chance if you’re looking for one of the two cards.
The problem here is mana cost and the body. It would be an amazing card at 4 mana. At 5 mana, it would be average. At 6 mana, it’s just bad. Despite giving you a card advantage, 6 mana for a 3/4 body is something absolutely unplayable. While the effect is powerful, the weak body will keep it from seeing play. Unless you absolutely want to have as many copies as possible of a certain 5+ mana spell and it’s so good that you’re willing to play a 6 mana 3/4 to get it… But I can’t really think of spells like that right now. Like, just compare it to the new Shaman card – Storm Chaser. While the effect is slightly worse (draw vs discover), paying 2 more mana for it seems a bit ridiculous.
Right now it looks bad, but I wouldn’t completely dismiss it. The fact that some of the classes have so little 5+ mana spells and can get the ones they want very consistently means that it might be useful at one point, in some deck.
Card rating: 3/10, but possibly better if you want to look for a specific 5+ mana spell