Hall of Heliod's Generosity (Retro) [Modern Horizons] Forest Plains −5: Artifacts you control become

−5: Artifacts you control become artifact creatures with base power and toughness 5/5 until end of turn

Set: Time Spiral Timeshifted Type: Creature — Zombie Rarity: Rare Cost: {2}{B}{B} Zombie spells you cast cost {1} less to cast

Set: Aether Revolt Prerelease Promos Type: Legendary Artifact Rarity: Mythic Cost: {5} Whenever you cast a spell

Set: Ultimate Masters Type: Legendary Creature — Eldrazi Rarity: Mythic Cost: {15} This spell can't be countered

or swapping 2-5 cards between the market and your cards

Hall of Heliod's Generosity (Retro) [Modern Horizons] Forest Plains −5: Artifacts you control becomeSet: Modern Horizons Type: Legendary Land Rarity: Rare {T}: Add {C}. {1}{W}, {T}: Put target enchantment card from your graveyard on top of your library. The stronghold of Theros's light.