Game the game
It also improves consistency, especially in builds that rely on graveyard setup or selective card access
The factors that go into how collectors value a Pokmon trading card are vast and varied, you dont need to be as clever as Professor Oak to understand them
A 5-mana 7/3 with Trample is probably something youd play more often than not, especially in a set with lots of Pack Tactics, since he can trigger it all on his own, but what really makes Zalto powerful is the fact that in most cases your opponent will have to at least give you the value of Venturing into the Dungeon once
Play the usual TeraZard line, evolve to put 2 Fire on Active and 1 on a backup Mander, take some knockouts, then before the first TeraZard gets KO'd (or if you have other ways to keep 4 energy in play, which Zard/Pidgeot should be able to do), evolve to a MegaZard and take out any opposing megas by dealing 380 damage
However, Magneton is KOd and will give out a prize card to your opponent