Pure

Pure can mean a deck with only class cards, or one that meets a stated class-card rule. It does not tell you if the deck is fast, slow, or built around a combo.

Trackers may keep Pure in a name even if a later list uses Neutral cards. Read the deck and its reward before making assumptions.

Build for the real rule

Check whether the reward looks at the starting deck, the current deck, or something else.

List the useful Neutral cards you give up. They might provide early minions, draw, flexible removal, disruption, or a finisher. The reward must be worth those losses. Filling every gap with a weak class card may make the whole deck worse.

Then follow the deck's real winning plan. A fast class-only deck still needs early plays and damage. A slow one still needs defense and a way to win.

Strengths and weak spots

A good class-card reward can support strong shared effects. The restriction may also leave clear gaps, such as no good answer to one kind of threat.

Created or shuffled cards affect some checks but not others. Read the exact text. Treat Pure as a search name until you know which cards the list really has and how it wins.

To give each card a job, check which jobs your class cards fill and which gaps the restriction leaves.