Throne of Bone [Beta Edition] Alpha Edition the player can activate mana

the player can activate mana abilities only if they're from lands that player controls and only if mana they produce is spent to activate other mana abilities of lands the player controls and/or to play that card

If at least two legendary creatures you control

navigator of the *Belligerent*

Set: Mercadian Masques Type: Sorcery Rarity: Rare Cost: {3}{B} You may exile a black card from your hand rather than pay this spell's mana cost

the ankle stone is connected to the leg stone

Throne of Bone [Beta Edition] Alpha Edition the player can activate manaSet: Beta Edition Type: Artifact Rarity: Uncommon Cost: {1} Whenever a player casts a black spell, you may pay {1}. If you do, you gain 1 life.