Being able to flashback a Mana Leak or a Fatal Push can absolutely ruin your opponents strategy
Cecil, Dark Knight Im really hyped for this card, because I think it fits perfectly into my favorite Modern archetype: UB Frog
For example, the siege subtype lets you basically assign it to an opponent to protect, then everyone else can attack it and it transforms into the backside when it's defeated
Buying Pokmon cards now as an investment will pay off down the line, at which point you can sell these collectibles and cash in their value for your retirement or other big financial endeavor
Its nearly useless against combo, but then again, for only 50 cents you cannot expect it to do everything
If it were costed more effectively then it would be an effect I could get behind, but this is not going to see any competitive play