5 Shining Rayquaza (Shining Legends) As Dragon-type cards very often require multiple types of energy to be effective, Shining Rayquaza can fit into many of them easily, though should only be played when a trainer needs to deal huge damage, regardless of the consequences
Sandshrew I might be in the minority on this one, but I have high hopes for this little Sandshrew [Pokemon 151]
C Common Harpie Lady 2 X WIND Level 4 [ Winged BeastEffect ] ATK 1300 DEF 1400 (This card's name is always treated as "Harpie Lady".) Negate the effects of Flip monsters this card destroys by battle
Notably, its not referring to any spell or card not on the battlefield
The potential to activate it multiple times a turn lets you get really far ahead, and it does all the planeswalker things provides board presence, card advantage, and removal in a single card