You get value every time a 2, 4, or 6 shows uplife drain, tapping shenanigans, and even recursion
(As usual, the affected Pokemon can return to the bench, evolve, or be cured with an item or ability instead.) Fire-type Pokemon inflict almost every Burn in the Pokemon TCG, though you'll find the odd duck elsewhere
It basically has to be run in Red Deck Wins, but it works great in the archetype as a powerful engine
To speed things up, two most useful tools for ramp in this deck are Gauntlet of Power, which will double all your basic land's mana production while also buffing your blue creatures, and Nyx Lotus, which gives you mana equal to your devotion to a chosen color
If its a Zombie card, you may reveal it and put it into your hand