The planeswalker killing aspect of Retribution is a mixed bag and ultimately just makes a narrow card narrower so even if it also makes it more powerful it is not a helpful addition
Artifact Reality Twist Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) If tapped for mana, Plains produce , Swamps produce , Mountains produce , and Forests produce instead of any other type
Creature - Avatar
You are still restricted by not being able to evolve a Basic Pokemon during your first turn, and if the Basic Pokemon was just played this turn, but if you set it up right, you can get yourself a Stage 2 Pokemon on your second turn easily
You can only use this effect of "Mistar Boy" once per turn.
It's important to know a small detail of this card's text and ruling: The card states that: "[...] your opponent cannot activate Spell / Trap Cards until [...]"