It costs one mana to cast it, then three mana to equip it to a creature
In Pokemon 151, however, we're more than happy to pay the Charizard tax
This deck receives large amounts of hate, due to its combination of being an alternate win condition (which many players dislike in general) as well as the large amounts of stall that cause some players to believe that playing Chain Burn is playing solitaire
Another very popular, though less powerful payoff are token doublers, which do what the package says
UR Ultra Rare PSE Prismatic Secret Rare SE Secret Rare Related Cards View as Gallery View as List Shadow Vampire X DARK Level 5 [ ZombieEffect ] ATK 2000 DEF 0 Cannot be used as material for an Xyz Summon, except the Xyz Summon of a DARK monster
But the real reason I mentioned funny is Professor Turos effect