These can be a specific type of ability the monster has (Flip, Spirit, Union, Gemini, Tuner, Pendulum), or indicate that the card needs to be Special Summoned in a specific way (Ritual, Fusion, Synchro, Xyz, Link)
Since these big hitters will likely be the highest HP Pokmon cards in the meta for a while, giving your opponent at least one swipe at them before you get to attack is a fair balancing mechanic that returns from the previous iteration of Mega Evolutions in 2016's XY Pokemon sets
Players will be able to slice open a fresh pack with a swipe of their finger, with two packs available per day for free
1x Journey Together
The VMAX tag, the Pokemon TCG's version of Dynamaxing and Gigantamaxing, makes this incredible scene possible, as Umbreon reaches a mammoth size