M:tG card similarity search
3 · Artifact
As long as Trinisphere is untapped, each spell that would cost less than three mana to cast costs three mana to cast. (Additional mana in the cost may be paid with any color of mana or colorless mana. For example, a spell that would cost {1}{B} to cast costs {2}{B} to cast instead.)
| Name | Mana | Type | Text |
|---|---|---|---|
| Horizon Stone | 5 | Artifact | If you would lose unspent mana, that mana becomes colorless instead. |
| Elder Brain | 5BB | Creature — Horror | Menace Whenever Elder Brain attacks a player, exile all cards from that player's hand, then they draw that many cards. You may play lands and cast spells from among the exiled cards for as long as they remain exiled. If you cast a spell this way, you may spend mana as though it were mana of any color to cast it. 6/6 |
| Lethargy Trap | 3U | Instant — Trap | If three or more creatures are attacking, you may pay {U} rather than pay this spell's mana cost. Attacking creatures get -3/-0 until end of turn. |
| Sins of the Past | 4BB | Sorcery | Until end of turn, you may cast target instant or sorcery card from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead. Exile Sins of the Past. |
| Lumbering Lightshield | 1W | Creature — Illusion | When Lumbering Lightshield enters the battlefield, target opponent reveals a nonland card at random from their hand. It perpetually gains "This spell costs {1} more to cast." 1/4 |
| Ugin's Insight | 3UU | Sorcery | Scry X, where X is the highest mana value among permanents you control, then draw three cards. |
| Reset | UU | Instant | Cast this spell only during an opponent's turn after their upkeep step. Untap all lands you control. |
| Warlord's Elite | 2W | Creature — Human Soldier | As an additional cost to cast this spell, tap two untapped artifacts, creatures, and/or lands you control. 4/4 |
| Treasure Keeper | 4 | Artifact Creature — Construct | When Treasure Keeper dies, reveal cards from the top of your library until you reveal a nonland card with mana value 3 or less. You may cast that card without paying its mana cost. Put all revealed cards not cast this way on the bottom of your library in a random order. 3/3 |
| Renari, Merchant of Marvels | 3U | Legendary Creature — Dragon Artificer | You may cast Dragon spells and artifact spells as though they had flash. Choose a Background (You can have a Background as a second commander.) 2/4 |