graded card holders Vaulted Case (4-Row) Row) is designed to provide secure and efficient storage for your graded card collection CardKingPro Graded Card Hard Storage

They mutate into the creature on top plus all abilities from under it

The extra attack power is also a nice add as in some matchups it may help reach the lethal damage you would want to finish off your opponent

During the End Phase of this turn, send your entire hand to the GY

Bidder acknowledges responsibility for any personal injury or property damage caused by Bidder or his agent, and further agrees to hold Auctioneers harmless from any personal injury to himself or his Agents and any property damage incurred on auction premises

As such, it has the meaning of 'overlapping', so it can be seen that it is a word representing each summoning method