It has no other effect beyond its semi-Nomi condition , and it can't be summoned from the hand, so it's always a dead draw
Most other tap effects are in white, which thematically justifies them as traps or law magic
A Look at Thrasios Before getting into the nitty-gritty of Training Grounds, its first important to understand the commander that it pairs with: Thrasios, Triton Hero
Another possibility is that the next mini-set introduces better supporter cards for Mega Absol EX, solidifying its place at the top of the meta
You run enough spells for it to be live often, and it enables Xyz plays
Not only is he a cheaper Sanguine Bond, he has way more synergies to work with, being able to be brought back with Sun Titan, being a Vampire so he works with cards like Blood Tribute, being a Cleric so he works nice with Ayli, Eternal Pilgrim Cleric Tribal decks, etc