Five mana for two creatures
Shiko and Narset, Unified One generic, one blue, one red, one white legendary creature - Human Spirit Dragon - 4/4 - Mythic Rare Flying, vigilance Flurry - Whenever you cast your second spell each turn, copy that spell if it targets a permanent or player, and you may choose new targets for the copy
The standard or gift bundle would be my recommendation
Any millennial and any parent will be familiar with Pokmon cards, newsagent pester-power mainstays since the turn of the century
Twenty-Toed Toad demonstrates two alternate win conditions on a single creature : when it attacks, you win if it has at least 20 counters or if you have 20 cards in your hand
The only reason Lightning isnt higher is that theres another Final Fantasy leading lady who does something similar, but better