City of Brass

Whenever this land becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.

Elephant Graveyard

{T}: Add {C}.
{T}: Regenerate target Elephant.

{T}: Add {C}.
{T}: Draw a card. Activate only if you have exactly seven cards in hand.

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

{T}: Add {C}{C}{C}. Spend this mana only to cast artifact spells.

{T}: Prevent the next 1 damage that would be dealt to target creature this turn.

Flying
Vigilance (Attacking doesn't cause this creature to tap.)

{T}: Add {C}.
{T}, Sacrifice this land: Destroy target land.

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.