Mhm, that's why Kurkesh, Onakke Ancient doesn't work with regular mana rocks. The way the synergy works:
1) Tap Basalt Monolith for CCC
2) Spend the 3 to untap the Monolith, and spend R to copy the activation with Kurkesh.
3) Resolve the first untap ability (that you paid 3 for), then tap the Monolith again for CCC.
4) Resolve the copied untap ability of the Monolith.
You've now effectively spent R to add CCC to your mana pool. You can repeat this indefinitely, as long as you have R to spend.
Soldevi Adnate + Metalwork Colossus can be used to create fairly large amounts of black mana in an artifact-heavy deck.
1) Tap Basalt Monolith for CCC
2) Spend the 3 to untap the Monolith, and spend R to copy the activation with Kurkesh.
3) Resolve the first untap ability (that you paid 3 for), then tap the Monolith again for CCC.
4) Resolve the copied untap ability of the Monolith.
You've now effectively spent R to add CCC to your mana pool. You can repeat this indefinitely, as long as you have R to spend.
Kurkesh, Onakke Ancient + Basalt Monolith = large amounts of colourless mana (CCC for every R you put in it).
Endrek Sahr, Master Breeder + Phyrexian Altar + Relentless Dead = infinite (grave)storm count, infinite ETB triggers.
Endrek Sahr, Master Breeder + Phyrexian Altar + Endless Cockroaches = infinite mana of any colour, infinite (grave)storm count, infinite ETB triggers.
Endrek Sahr, Master Breeder + Phyrexian Altar + Cloudstone Curio + any creature = infinite mana of any colour, infinite (grave)storm count, infinite ETB triggers.
Shrieking Drake + Equilibrium = 1U: Return target creature to its owner's hand.
Shrieking Drake + Dire Undercurrents = U: Draw a card.
Shrieking Drake + Vela the Night-Clad = U: Each opponent loses 1 life.
Add Vela to the the firsttwo combos and it becomes:
Shrieking Drake + Equilibrium + Vela the Night-Clad = 1U: Return target creature to its owner's hand. Each opponent loses 2 life.
Shrieking Drake + Dire Undercurrents + Vela the Night-Clad = U: Draw a card. Each opponent loses 1 life.