Dragonlair Spider I dont like relying on my opponents, but Dragonlair Spider from the 2012 release of Planechase is so open-ended that you benefit no matter what theyre up to
1 starter deck of 60 cards, including 2 foil cards of the characters on the package front
There is one card, for example (a semi-popular Alpha card whose color needed to change), that I put on the wish list at the end of Fifth Edition development that has yet to be printed even though Ive included the card in three different designs
The low mana cost of Shadowspear is what makes this card such a good answer: the equipment itself is just 1cmc and the ability -- which doesn't even need you to equip first to use -- is also 1 mana, making it super easy to tutor up and use it when combined with follow-up removal
Diamond Weapon Rarity: Uncommon TYPE: Legendary Artifact Creature SUBTYPE: Elemental CMC: 9 Mana cost: USD: $2.70 EUR: 1.65 TIX: 0.28 EDHREC RANK: 5547 (8/8) This spell costs less to cast for each permanent card in your graveyard
It is also a Ritual Monster and an Effect Monster