Being strictly worse than Rattleclaw Mystic is pretty bad, even for a deck sorely wanting early acceleration
When you don't need any immediate action Portent is better than Ponder as it can be disruptive but this makes it a bit too unreliable for this sort of card
Here is the definitive checklist: Rarity Card Types & Print Finishes: A TCG Manufacturer's Breakdown Based on real prototype images from the London Trading Card Show, we can identify the specific print finishes used to differentiate the sets
8 Pikachu & Zekrom GX: Team Up (Ultra Rare) $35.94 An Electrifying Combination Pikachu might boast one of the most valuable collections of cards ever seen in the Pokemon TCG, but its Tag Team appearance alongside Zekrom is one of the best artworks available at an affordable price
Its also worth noting that miscuts can happen horizontally
Theres the obvious benefit that youre getting some free creatures to swing with for one turn, but Mirror March lets you cash in on multiple effects that trigger when that creature enters the battlefield