A 3/3 haste for 3 mana is very solid tempo and is particularly scary off the back of a one drop mana critter
Interestingly, with Sylveon being introduced in X & Y, you might expect there to be a few different Eevee cards to celebrate its new evolution
Association with Rarity Here are effects that don't tend to start until rare: Alternative win conditions Copying permanents Counter doubling Damage doubling Extra combat steps "Lobotomy" (removing all of one card from the game) "Maro" ability (power/toughness equal to hand size) Mass creature destruction "Meddling" (name a spell that then can't be played) Massive token creation Permanent control change Playing cards off top of library Spell copying Spell redirection Tutoring creature from library onto the battlefield Mythic Rare Complexity We allow advanced board complexity at mythic rare, but actually require lower comprehension complexity at mythic rare than we do at rare because we want players to understand what the mythic rares do
Every game where she stays in play for a few turns feels insanely powerful
Mai, Scornful Striker Mai, Scornful Striker is perfect coming out of the sideboard against spellslinger, control, or combo decks to greatly limit what they can do
Consider a fireproof storage box for high-value or special cards