M:tG card similarity search
1 · Artifact
At the beginning of your upkeep, you may add {C}{C}. You can't spend this mana to cast spells.
| Name | Mana | Type | Text |
|---|---|---|---|
| Alchemist's Refuge | Land | {T}: Add {C}. {G}{U}, {T}: You may cast spells this turn as though they had flash. | |
| Secret Base | Land | {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a spell that shares a watermark with Secret Base. | |
| Epic Struggle | 2GG | Enchantment | At the beginning of your upkeep, if you control twenty or more creatures, you win the game. |
| Uktabi Efreet | 2GG | Creature — Efreet | Cumulative upkeep {G} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) 5/4 |
| Toy Boat | 3 | Artifact Creature — Ship | Cumulative upkeep—Say "Toy Boat" quickly. (At the beginning of your upkeep, put an age counter on Toy Boat, then sacrifice it unless you say "Toy Boat" once for each age counter on it—without pausing between or fumbling it.) 3/3 |
| The Ruinous Powers | 2BR | Enchantment | At the beginning of your upkeep, choose an opponent at random. Exile the top card of that player's library. Until end of turn, you may play that card and you may spend mana as though it were mana of any color to cast it. When you cast a spell this way, its owner loses life equal to its mana value. |
| Shrine of the Forsaken Gods | Land | {T}: Add {C}. {T}: Add {C}{C}. Spend this mana only to cast colorless spells. Activate only if you control seven or more lands. | |
| Sultai Ascendancy | BGU | Enchantment | At the beginning of your upkeep, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) |
| Think Tank | 2U | Enchantment | At the beginning of your upkeep, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.) |
| Sakura-Tribe Springcaller | 3G | Creature — Snake Shaman | At the beginning of your upkeep, add {G}. Until end of turn, you don't lose this mana as steps and phases end. 2/4 |