pokemon card sets wiki An Introduction to Base Set & The 1999 Formats – Retro Pokémon TCG Top 10 Pokemon Cards Box

However, if a Lion Umbra you control is attached to a creature you don't control and that creature has no Auras controlled by that creature's controller attached to it, no Equipment attached to it, and no counters on it, Lion Umbra will be put into its owner's graveyard due to being attached to an illegal object the next time state-based actions are performed

After that, you have a single Obstinate Baloth, which comes in a four mana, while everything else in the pack is three mana or less

Likewise, there are some lands and creatures that would be very helpful to Tricky Terrain and could replace some underperforming cards

Against the blue decks you generally want to save it for their end step, against the aggro decks you want to combat step it, while against the midrange decks its often best used in the upkeep just to tap down lands (Tron literally cant interact at anything other than Sorcery speed)