This is a deck for normal Chromaggus using 100% basic cards.
This is a really fun fight and Chromaggus will fill your hand with spells you want to get rid of as soon as possible. The most important spell to get rid of is Brood Affliction: Black and the others you shouldn't need to worry about too much.
These are special cards used by normal Chromaggus.
After you conquer normal Chromaggus you will win 2 copies of this card.
Using Other Classes
It's important to ramp up your mana quickly so you can play minions, but also get rid of the spells he gives you each turn. Druid tends to have a better chance at this with Innervate and Wild Growth. You could try other classes, but you might have to hold onto the bad spells longer than you would like.
Boss Deck Listing
This is the complete listing for the deck used by normal Chromaggus.
2 Blackwing Technician
4 Chromatic Dragonkin
2 Dragon Consort
2 Dragon's Breath
2 Drakonid Crusher
2 Faerie Dragon
2 Hungry Dragon
2 Twilight Drake
2 Wild Pyromancer