If heads, does double the damage if tails, the 3 of the opponents cards are paralyzed no matter what defenses or buffs it may have.can be use at the start of the game no matter what
From there, you can follow up with a Pippin, Warden of Isengard, and its ability to sacrifice four Food tokens to give all your other creatures +3/+3 and haste to stand up against your foes
As a direct point of comparison, this exact Marnie card appears in English's Sword & Shield Base Set, but only commands a fraction of her Japanese value, settling at around $30
6 Checklane Blister Speaking of freebies, if you want to gift someone a pack, particularly a young collector, but you don't want to risk them walking away with absolutely nothing of interest, then a checklane blister is a nice idea
Originally seen in aggro decks, sometimes paired with Experimental Frenzy, it now sees some play in storm builds with Birgi, God of Storytelling
The former lets you punish color-hungry decks like Domain, while the latter is essentially a free board wipe against the likes of Gruul Aggro