On your cards, instead of using colors, punctuation will let you tell what kind of text everything is
[Grass] Spike Rend 30+ If your opponent's Active Pokemon already has any damage counters on it, this attack does 60 more damage
In addition to that, his deck doesnt seem to have any special form of negation
Its real value is in some choice staples and your ability to build upon them
Creating a baseline 2/1 myr and turning your, say, Treasure tokens into that is very powerful, but thats just the beginning
At the end of the Battle Phase, if this card destroyed a monster by battle and sent it to the Graveyard this turn: You can Special Summon 1 "Halloween" Tuner Monster from your Graveyard, and if you do, your opponent draws 1 card