The phrase identifies the most effective and powerful creatures in the Magic: The Gathering trading card game that possess both the artifact and creature card types. These beings are defined by their colorless mana cost, which allows them to be included in virtually any deck, and their creature status, enabling them to attack, block, and interact with other creature-specific mechanics. For example, a creature that efficiently generates mana or possesses a high power-to-cost ratio would likely be considered among the elite.
The significance of these creatures lies in their inherent flexibility and synergistic potential. Their colorless nature provides a distinct advantage in deckbuilding, allowing them to shore up weaknesses or enhance existing strategies without restricting color identity. Historically, these beings have played pivotal roles in shaping the metagame, often dictating deck archetypes and influencing the overall power level of competitive play due to their ability to support various strategies while evading color-based removal spells.