Trick Room is classified as a spatial skill, and once used, it essentially changes the rules of an entire area, so unleashing this move requires a long period of charging.
If Protect is the fastest priority skill, then Trick Room is the slowest, without exception.
Unless your Pokemon can reach Divine Domain Level, the time needed to use Trick Room is extremely lengthy, even if the opponent is two levels below you, you cannot use Trick Room before them.
Once Trick Room is activated, the boost to teams that suit spatial rules is enormous.
Within Trick Room, the faster a Pokemon's Speed, the slower they will act; conversely, the slower a Pokemon's Speed, the quicker they will act, rendering Speed-oriented Pokemon a burden in Trick Room.
Some Trainers specifically tailor their teams to the characteristics of Trick Room, training a team of extremely slow Pokemon to always act first in Trick Room—this is rarely seen but exceedingly powerful—Space Team!
Ash had only heard the strategy mentioned by experts in the group because the occurrence is rare, and every Parallel World Ash prefers Speed Attack tactics, so this battle strategy is not detailed.
For the Ash of Parallel Worlds, including the current Ash, there's no need to engage in spatial strategies; their Pokemon are inherently fast, even large ones are agile and swift.
Therefore, Ash doesn't need skills like Trick Room; he doesn't have the matching Pokemon to use it.
Conversely, Trick Room is quite a counter-strategy against Ash.
All of Ash's Pokemon are Speed-oriented, even the relatively slower Blastoise is not slow. Encountering Trick Room is like meeting a deadly enemy from above.
This is why Ash's face changed drastically, as he directed Blastoise to prevent the opponent from using that skill, but unfortunately, it did not succeed in blocking it.
The activation of Trick Room almost meant Ash lost his initiative, and Ash finally understood what the E-level in those attribute values was about; they were specifically suited for the attribute values that Trick Room could reduce.
As for how to reduce them... methods to increase Ability Values exist in this world, so there are naturally ways to lower Ability Values; this requires finding specific items to achieve.
This is why Space Teams are even more difficult to form; apart from naturally slow Pokemon, finding items to lower a Pokemon's Speed attribute is quite a hassle—who in their right mind would engage in such bothersome Space Teams?
"Looking at you Ash, you should know the use of Trick Room, right? I have to say, this Hydro Pump is quite powerful but ultimately can't stop my Trick Room from activating. Once Trick Room is set up, the formula for victory is written, be prepared Ash!" Conway adjusted his glasses and spoke dramatically.
Immediately, Conway withdrew Dusknoir, then took out the second Pokeball and threw it: "Go Shuckle!"
A flash of light, and a Pokemon resembling a small turtle appeared on the field, with his shell having many small openings, just like its name hints at an exterior similar to a pitcher.
Shuckle's little head shot out with a determined expression, and Conway swiftly made tactical arrangements upon releasing Shuckle: "Limited time, quick battle Shuckle, use Withdraw repeatedly, then use Power Trick!"
"Shuckle~~" Shuckle's tiny head and body retreated into its shell, and a light shone on the surface of its shell, indicating an increase in Shuckle's Defense.
A Pokemon like Shuckle possesses an incredibly formidable Defense and Special Defense, even ranking among the top among all Pokemon, but this Pokemon has very low Speed, with weak ATK, generally cultivated for rotation or to afflict negative status on opponents by trainers.
But from Conway's orders, it's clear his Shuckle is not a defensive counter type, but a strong attacker!
"Trick Room transforms Shuckle's Speed from the slowest to the fastest, then use Withdraw to increase Shuckle's Defense, finally use Power Trick to swap Defense and ATK, turning Shuckle into the fastest and strongest attacker at the same level—is this your strategy, Conway?" Ash murmured, quietly producing a stone in his palm.
Conway's battle technique can be anticipated if one understands the principles of Space Team and is familiar with Shuckle. After hearing lessons from the experts for so long, Ash has this level of knowledge.
Thus, he can effortlessly analyze Conway's strategy. However, analysis is one thing; knowing the principles requires a way to counteract them.
Ash's choice is... to break through with brute force!
Isn't it just strong offense? Who's afraid of who!
"Blastoise, MEGA evolve!!" You set up Trick Room first, then I'll use MEGA evolution first—makes sense, right? Playing dirty? Let's see who's dirtier!
"Ka-me!!" Blastoise roared, the MEGA Evolution Stone on its body surfaced, resonating with the Key Stone in Ash's hand, linking energy, and its body emitted a dazzling colorful light.