Another type of large Pokemon cards, which can be categorized as a separate type from the jumbo cards are the box toppers, which are very hard to find
Just fill your box with the cards you want to trade in it and voila you're done
In fact, Firewalker is especially potent in decks that are running red themselves, because he will trigger for your own spells
During the design for the Mirrodin block, Rosewater wanted to make use of +1/+1 counters in a similar way to the spikes while also making artifact creatures matter
well in this case you don't have tons of spells to take your cards and throw them in your enemys face to deal damage, but red is still nice :) While experimenting with Riku I saw how funny this guy can be, but I had to admit, that Animar, Soul of Elements is much stronger