Global Effects

Global Effects are effects that continue affecting Digimon that come into play or move from a breeding area to the battle area after the effect's activation.
== Determining a Global Effect ==
All global effects will specify the following in their effect text:
*The text: "all of <condition> Digimon with <condition>"
* A duration (e.g. "for the turn", "until the end of opponent's turn", etc.)
 is an example of a card that applies a Global Effect after its effect has been activated. It specifies "text: all of your Digimon with <condition: or >"... "duration: for the turn"
==What happens?==
===Overlapping Global Effects===
When multiple global effects overlap, any new Digimon that enters a battle area has all of the effects applied to it simultaneously.
When multiple effects that add or subtract values like DP are applied simultaneously, the final sum of all positive/negative values is applied. For example, when a +3000 DP effect and a -5000 DP effect are applied simultaneously, 3000 – 5000 = -2000 DP is applied.
===When Digivolved===
When a Digimon is digivolved, the Global Effect will check whether the Digimon still meets the conditions specified in its "all" effect. If it previously matched the conditions and now no longer matches the conditions, the global effect is no longer applied to the Digimon. If it previously didn't match the condition and after digivolving now does match the conditions, the global effect will be applied to the Digimon even if it didn't match at the time the Global Effect was applied.1
===When Played===
A Digimon that enters play will check whether the Digimon meets the conditions, and apply such global effects if the new Digimon meets the conditions of the Global Effect.
====Reaching 0 DP====
It’s possible for global effects to cause a Digimon to reach 0 DP as soon as it enters play. When this happens, if the Digimon has any effects, they don’t activate, as the Digimon is deleted before its effects can activate. 
However, the Digimon is still considered to have been played, so other effects such as “When you play another Digimon,” or “When an opponent plays a Digimon,” still activate.
==Sources==
*Detailed Rules Explanation
#Card Rulings:BT3-106
#Card Rulings:BT1-100