Post's Sigil - Leshrac's Sigil [Secret Lair Drop Series] Alpha Edition you may cast target instant

you may cast target instant or sorcery card with mana value less than or equal to Dreadhorde Arcanist's power from your graveyard without paying its mana cost

Cut it down

Set: Planechase Type: Artifact Creature — Myr Rarity: Common Cost: {7} Affinity for artifacts (This spell costs {1} less to cast for each artifact you control

Set: Onslaught Type: Creature — Elf Warrior Rarity: Rare Cost: {1}{G} Whenever another Elf enters the battlefield

Post's Sigil - Leshrac's Sigil [Secret Lair Drop Series] Alpha Edition you may cast target instantSet: Secret Lair Drop Series Type: Enchantment Rarity: Rare Cost: {B}{B} Whenever an opponent casts a green spell, you may pay {B}{B}. If you do, look at that player's hand and choose a card from it. The player discards that card. {B}{B}: Return Leshrac's Sigil to its owner's hand.