Essentially, if you have a full party with all four of these on the board, you can pay one white, one blue, and one black mana to give the Warrior lifelink, deathtouch, and make him unblockable (deathtouch and unblockable at the same time has no real use, but thats still OP to think about)
It makes it far more expensive to pick up the individual packs, coming as they do either with frippery and extras like coins, oversized cards, or sleeves, that bulk up both the contents and the price, or in individual booster packs at $5 a pop
You can only activate this effect once per turn, during your Main Phase
Non-Indicative Name: The "Darkness" type lacked any Pokmon considered Dark-type in the main series at the game's launch note , as the starting Genetic Apex set focuses on Generation I Pokmon (none of which are Dark-type in their Kantonian forms)
Boltwave is actually even better than Lava Spike, too, since it doesnt target