Ajani's Aid : Enchantment, casting cost of two generic, one green, and one white mana
At 1 mana, you cant get much better value for a hard counter, and stopping that specific noncreature spell from resolving is often way more important than the two extra mana theyll have on the following turn
Party Time (Battle for Baldur's Gate): Built around the "Party" mechanic (having a Cleric, Rogue, Warrior, and Wizard), this deck is highly synergistic and contains extremely valuable format staples, making it a great long-term investment
For starters, I should point out that constellation is technically not a keyword mechanic but an ability word
The creature is also a rather comedic take on necromancy as it demonstrates some of the lesser-known difficulties of raising the dead