Ink cards are played to pay the cost of 'glimmers', which allow you to use characters, items, and actions to affect the state of play
6 Two or More Monsters Combined Make a Fusion Monster Violet Extra Deck, Main Monster Zones, Extra Monster Zones Fusion Monsters were once the only cards that began each Duel in the Extra Deck when it was called the Fusion Deck
If you want the tribal trigger Id maybe try the latter, but in all other cases Id prefer Void Shatter, as the Devoid rider means that cards like Red Elemental Blast wont work here
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)
Its all around a sweet little card, and one I always play in blue
Its static ability prevents your opponents from activating their artifacts, which includes all those pesky tokens weve been accumulating