Crazed Alchemist is totally reliant on synergy with (or against) other minions to be effective. Against a 0 attack minion such as Shieldbearer or Lightwell, the Alchemist is a 2 mana removal spell that gives you a free 2/2. Note that the swapping mechanics takes all buffs on the minion into account. A Flametongue Totem under the influence of a Stormwind Champion will no longer die from Crazed Alchemist's battlecry. Similarly, while technically being an 0/5, you can not kill a Lightspawn in this way either, since the minion's buffed stats are used.
In other cases, it can keep a Taunt or Enrage minion alive an extra turn or make durable minions like Fen Creeper swing for a lot of damage. That being said, given its extremely situational nature, and with only 2 allowed in a constructed deck, it's probably better to rely on the Alchemist as a bonus, not a core part of a strategy.
|Power Word: Shield||Free||Priest||Spell||General||1||Give a minion +2 Health. Draw a card.|
|Gurubashi Berserker||Free||Neutral||Minion||General||5||2||7||Whenever this minion takes damage, gain +3 Attack.|
|Humility||Free||Paladin||Spell||General||1||Change a minion's Attack to 1.|
|Equality||Rare||Paladin||Spell||General||2||Change the Health of ALL minions to 1.|
|Aldor Peacekeeper||Rare||Paladin||Minion||General||3||3||3||Battlecry: Change an enemy minion's attack to 1.|
|Aldor Peacekeeper||Rare||Paladin||Minion||General||3||3||3||Battlecry: Change an enemy minion's Attack to 1.|
- Power Word: Shield and Alchemist allow you to make a durable minion deal lots of damage. Alternatively you can swap first and then Shield to save the minion for another turn.
- Gurubashi Berserker gets stronger the more damage it takes, and unlike cards with Enrage it doesn't lose the buff when it gets healed. So buff it up, swap attack and health, and then buff it up a lot more.