Mana Wyrm gains 1 less attack but is permanent (fair trade-off right?)
But the problem is Mana Wyrm is also a Class Card and SHOULD be stronger than Mana Addict,the nerf to 2 Mana is like making Mana Wyrm a 1 mana 1/1 that grows its attack.
A 1 Mana 1/2 Mana Wyrm would still be acceptable might as well move it to HoF and revert the nerf.
With Every rotation Classic Cards get thinner and the power level of the set gets reduced that....pretty much does not matter if the set is Evergreen if you do not at least have a few build around cards in it (like Malygos) as auto-includes. Classic set NEEDS to have some of those cards,just like how other expansions had build-around cards.
I am really disappointed by the timing of the Mana Wyrm nerf and also by the nerf itself.