pokemon card image All Vintage Ex Cards 2003-2007 : r/pkmntcgcollections Logan Paul's Pikachu Illustrator Pokémon

The real power comes from Blaze Burst

Lord of the Pyrrian Legions allows him to cast artifact spells from your hand or graveyard when he attacks, paying life instead of mana to do so

As for the card prices, you may be able to put some extra dollars/pounds onto the prices shown when selling them but they are not massively rare cards so I would personally advise not to sell them for too much

Evasive appears to work in a similar manner to Magic: The Gatherings Flying keyword, requiring cards to have the keyword in order to block or attack other cards that have it

its just not difficult to come up with more powerful cards for the same cost