For example, its been built into Lost Zone decks (pre-rotation) to give us another archetype in the meta
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If Molten Man leaves the battlefield before his enters triggered ability resolves, the leaves-the-battlefield triggered ability will resolve first, and you will sacrifice a land before searching your library for a Mountain
Basically, this lets you blow up Mewtwo ex, Charizard ex, or any other Pokmon that wants to stack Energy to perform big attacks
There are six on the French cards and five on the German cards
Unlike the other two, it has to come from the player's hand and has a low enough Level to Normal Summon without a Tribute