At the beginning of your upkeep, Elven Tubes deals 2 damage to target creature you control.
: Add or to your mana pool.
Sacrifice Elven Tubes: Add or to your mana pool.
, : Add one mana of any color to your mana pool.
: Add 
or 
to your mana pool. or to your mana pool.
, : Add one mana of any color to your mana pool.
