As in the Pokmon video games, the Pokmon Trading Card Game has a number of special conditions that can be inflicted on Pokmon, giving their opponent an extra advantage in a battle
Control effects can usually target a creature you already control
Galvanic Key Giving a Hematite Talisman flash wouldnt make that playable either
Dredging for six anytime you would draw a card is often akin to drawing six cards for decks that can utilize it effectively, making this a creature worth building decks around
Not only is it amazing to see these three mighty Legendary (and Mythical) Pokmon come together on one card, but the power they bring to your deck will have your opponents trembling in fear
And naturally, since artifacts are mostly colorless cards, and include some of the biggest design mistakes in Magic, they tend to produce infinite combos quite easily