Myr Reservoir [Scars of Mirrodin]Set: Scars of Mirrodin Type: Artifact Rarity: Rare Cost: {3} {T}: Add {C}{C}. Spend this mana only to cast Myr spells or activate abilities of Myr. {3}, {T}: Return target Myr card from your graveyard to your hand. A mana well as bottomless as the myr are tireless.

They phase in before that player untaps during their next untap step

Set: Platinum: Arceus Type: Psychic Rarity: Holo Rare Retreat cost: 0

witch of Morkrut

Set: Sun & Moon: Celestial Storm Type: Supporter Rarity: Promo

Whenever you discard a creature card

Set: Alara Reborn Type: Creature — Demon Rarity: Mythic Cost: {3}{B}{B}{R} Flying

Set: Dominaria Prerelease Promos Type: Enchantment Rarity: Rare Cost: {5}{R} When Haphazard Bombardment enters the battlefield

Set: Diamond & Pearl: Base Set Type: Metal Rarity: Holo Rare Retreat cost: Colorless

Set: Planeshift Type: Instant Rarity: Rare Cost: {W} Kicker {W} (You may pay an additional {W} as you cast this spell

Set: Platinum: Supreme Victors Type: Metal Rarity: Promo Retreat cost: Colorless

{T}: Create an X/X green Elemental creature token

Set: Starter 1999 Type: Creature — Human Knight Rarity: Rare Cost: {4}{W}{W} Prevent all damage that would be dealt to Champion Lancer by creatures