double strike mtg cards First & Strike - Keywords Explained copy that spell MTGNexus - Unrelenting Double Strike

In other words, you'll need to finish everyone off quickly before they get more mana and team up on you

In addition, once you counter an activated or triggered ability of an Artifact, Creature, or Planeswalker, that card loses all abilities for as long as Tidebinder stays in play

There is enough space in the trays to add cards from booster packs later on

That said, these cards arent exactly common

Since those cards are exiled and you will eventually, hopefully, cast some of them, you might want to include some cast from exile synergies with cards like Flaming Tyrannosaurus

Outside of being a strong generic Commander card, however, there doesnt seem to be a specific reason that Nibelheim Aflame is rising in price