Sylvan Library [Fourth Edition (Foreign Black Border)] H18 When that mana is spent

When that mana is spent to cast an instant or sorcery spell

Set: Battlebond Type: Creature — Elf Advisor Rarity: Rare Cost: {2}{G} When Generous Patron enters the battlefield

or just Officially Retro

Set: Core Set 2019 Type: Creature — Goblin Warrior Rarity: Rare Cost: {2}{R}{R} Other Goblins you control get +1/+1

Sylvan Library [Fourth Edition (Foreign Black Border)] H18 When that mana is spentSet: Fourth Edition (Foreign Black Border) Type: Enchantment Rarity: Rare Cost: {1}{G} At the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.