As Terra is an Esper (the summons of Final Fantasy 6), Terra, Magical Adept is a very thematic commander for summon creatures in Magic
(2) Once per turn (Quick Effect): You can detach any number of materials from this card, then target that many monsters your opponent controls
The second problem, and the reason Starmie ex decks dont do great in tournaments, is that they have an unfavorable matchup against Pikachu ex due to that decks slightly superior reliability and Starmies type disadvantage against Electric Pokmon
This is a step-by-step guide on how to set up a match, and then how to apply resistance and weakness in the Pokmon T.C.G
You can also pay two mana to give another Human you control lifelink, which is nice, but the main thing is that you can transform them
Any time Phyrexian Vindicator takes damage, that damage is prevented and instead, you can deal that much damage to another target