captain america mtg card America, First Avenger | Secret Lair Catch — At the beginning of combat on your turn Captain America decks (and voltron

The other adventure lands are good as well, but this one allows for recursion of card types, enchantment and artifact, without the restriction White usually gets on mana value and nets us up to two cards in the process

Spider-Man 2099 Saffgor: Odd comparison but this is likely worse River Song once you climb the power level, and being only on your End Step is just not enough, given you're only hitting one target

If the target of the first ability is an illegal target at the time the ability tries to resolve (likely because it left the graveyard in response), the ability won't resolve and none of its effects will happen

One easy way to circumvent this weakness is running High Market so you can sacrifice it at instant speed and prevent it from getting exiled