For anyone who wants a more complex game proximate to this design, there's a small production called Reinforcements (https://reinforcementscg.myshopify.com/). Non-collectible, single box.

You play a hand of up to 5 cards each turn: Adding cards to (concealed) stacked ranks of defending troops, attacking an opponent's ranks, using a card's ability. The suits have different defensive properties when arranged in a rank, and combine in interesting ways; there are also "ultimate" powers players can grab from the center by forming their ranks with particular arrangements of suits, which act as turtle-busters.

Highly recommended, quite fun, probably plays best 1v1. Definitely a lot of small rules to absorb, so it's a more complex beast. But nowhere close to the complexity of Magic.