mtg magic origins booster box 2016 Set - the Gathering TCG Card Game 80 Uncommons MTG Magic Origins Booster Pack

It does limit what you can cast based on damage so some planning is involved and you have to connect, but free spell is free spell

Balamb Garden - Command Beacon (Showcase) (FCA-064) - FINAL FANTASY: Through the Ages Wizards of the Coast Land Rare null/null T: Add C

It relies on combos and timing when to play your cards, with several of the included characters triggering their effects upon entering or leaving the play area

Flashback Flashback Sorcery Draw (CTRL to add secondary) Finisher Tifa, Martial Artist Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.) Whenever one or more creatures you control with power 7 or greater deal combat damage to a player, untap all creatures you control