Considered by many to be overpowered cards when it comes to gameplay, that fact has not impacted their value or collectability
Both of the two-mana modes here are hugely relevant, especially the green land tutor effect
The best payoffs are ones that put counters on themselves (like Tellah, Great Sage and The Emperor of Palamecia) for casting expensive noncreature spells to make them bigger combat threats
For example, these six cards show the chaotic end of Book 2 battle involving Prince Zuko and his sister Azula: Combustion Technique Zuko, Conflicted Azula, Cunning Usurper Aang, at the Crossroads / Aang, Destined Savior Katara, the Fearless Dai Li Agents These cards can be found in Play Boosters and Collector Boosters, both in foil and non-foil treatments
This turns my otherwise slow creature into a power surprise