Counter Trap A Counter Trap is a Trap Card that can activate in response to another card effect
Back Sephiroth, One-Winged Angel Legendary Creature - Angel Nightmare Avatar Flying Super Nova - As this creature transforms into Sephiroth, One-Winged Angel, you get an emblem with "Whenever a creature dies, target opponent loses 1 life and you gain 1 life." Whenever Sephiroth attacks, you may sacrifice any number of other creatures
POKMON CARD GAME S8b 234/184 Character Super Rare card
That along is pretty good, but the enchantment also give you some tokens when your commander attacks
It fits the pattern too perfectly to be left out of the format for long
Anyone who plays Standard regularly should have a playset of these at hand, and now is a reasonable enough time to buy in