mtg commander deck box ultra pro The Lord of the Rings: Tales of Middle-earth Sauron 100+ for Magic: The Gathering Army of One Commander Legends Pro-100+ Deck Box

For example, there can be cards that appear in one type of booster but not the other

First Response can trigger on each upkeep, but if it does that probably means I'm taking a beating

Usually, this two-mana creature goes into decks where most of the cards dont cost that much mana, and where the benefit of having an extra card each turn outweighs the downside of losing life

You gain life equal to the number of cards shuffled into your library this way

Under the current rules (as of writing this blog post) both of them would simply die as a state-based action due to the planeswalker uniqueness rule, so nothing special happens