level 9 yugioh cards True King of All Calamities - MACR-EN046 Super Rare From the Abyss Rising set Yu-Gi-Oh! - Winged Kuriboh LV9

If you have creatures like Goldspan Dragon or care about artifacts (such as branching into UG or RG) then Provisioner is a slam dunk include

Powerful Rage starts out initially weak by only dealing 20 damage, but it grows stronger as more damage counters are placed on Reshiram

[D][C][C] Poison Jab: 90 damage

While I know that most planewalkers die from going to zero loyalty, there are occasions where they just outright get killed (see also Lethal Scheme)

Depending on your future needs, you may end up with decks that have greater or fewer of each main category, though you'll rarely, if ever, climb higher than 20 Pokemon or 15 Energy