[All Turns] When this Digimon would leave the battle area, by placing 4 [Vemmon] from this Digimon's digivolution cards at the bottom of their owners' decks, prevent it from leaving play
This is combined with gameplay that puts long combo chains and reaction-based activation at its heart, making it difficult for newcomers to understand exactly what should happen when - or how they went from their full 8000 life points to zero in the space of a single turn
Bring your table to safety, now
The Umbreon cards are very well made, and this one is yer another addition to that growing list
This would give me a much more direct path to victory
(Choose any number of permanents and/or players, then give each another counter of each kind already there.) Lulu's first ability only cares about creatures attacking you, not planeswalkers you control or battles you protect