One mana, counter something somewhat specific but broad enough
Here are the standard MTG playing card dimensions
You can take this equipment to even greater heights with +1/+1 counter synergies like Shalai and Hallar and Simic Ascendancy
As early as Alpha, it featured cards that peered into the abyss, showing us the kinds of monsters we vaguely recognised from our nightmares
There are a number of resources out there that allow you to plug in your decklist and get a breakdown of what percentage of your cards need specific colors of mana, what the average converted mana cost of your cards is, and other helpful information (Im partial to Tapped Out personally)
Adventures in the Forgotten Realms TypeLegendary Creature Dragon God Collector Number235 Raritymythic ArtistChris Rahn Flying When Tiamat enters, if you cast it, search your library for up to five Dragon cards not named Tiamat that each have different names, reveal them, put them into your hand, then shuffle