Penta Summoning
It's a Summon you do targeting Spell/Trap cards on either side of the field to use as Penta Targets for your monster's Penta Summons (This does not start a chain), a Special Summon conducted from the hand. If one of those targets leave the field, the Penta Monster is destroyed, but the Penta Monster can leave the field without destroying the Penta Targets. This counts as being destroyed by a mechanic, not by card effects. From Levels 1-4 you target 1 Spell/Trap, from Levels 5-8 you target 2, and from levels 9 and up you target 3. Targets for a Penta Summon are called Penta Targets. You can only Penta Summon once per turn, unless other cards dictate you can do otherwise, also cards in use as Penta Targets by a Penta Monster on the field cannot be used as Penta Targets for a different Penta Monster’s Penta Summon. However, if that monster is flipped face-down, or leaves the field, those cards can be used as Penta Targets once more. This is a Main Deck Mechanic.
Examples
This monster is Level 3, requiring 1 Target to Penta Summon it. It gains an additional effect if Penta Summoned, and also provides the ability to give an "Ulti-Draco" the ability to be treated as being Penta Summoned. (Not all Penta Monsters have to gain effects if Penta Summoned.)
This monster is Level 7, requiring 2 Targets to Penta Summon it. It gains multiple additional effects if Penta Summoned (not all Penta monsters have to gain effects from being Penta Summoned).
This monster is Level 9, requiring a whopping 3 Targets to Pena Summon it. It is a boss among bosses and also gains multiple effects from being Penta Summoned (not all Penta monsters have to gain effects from being Penta Summoned).
