etched cards mtg Spellseeker (Foil Etched) [Commander Masters] First strike Hidden Blade (Foil Etched) -

That first ability resembles the shenanigans you can get up to with Dargo, the Shipwrecker, so in the right deck, you can cast it for two mana, attack for seven (that can only be blocked by legendary creatures), and then sacrifice it to destroy an annoying artifact or creature

If you're going to use it, spells that can meet the condition in the 4-mana range are essential

Blade Splicer is the easy one

X-2 Modern Decklists from Pro Tour Marvel Super Heroes

Enchantment Color tag templates(None) Fable of the Mirror-Breaker (As this Saga enters and after your draw step, add a lore counter.) I Create a 2/2 red Goblin Shaman creature token with "Whenever this token attacks, create a Treasure token." II You may discard up to two cards

This drove up his cost from 1 to 3