Heart of Yavimaya
Land
If ~this~ would enter, sacrifice a Forest instead. If you do, put ~this~ onto the battlefield. If you don't, put it into its owner's graveyard.
{T}: Add {G}.
{T}: Target creature gets +1/+1 until end of turn.
Kjeldoran Outpost
Land
If ~this~ would enter, sacrifice a Plains instead. If you do, put ~this~ onto the battlefield. If you don't, put it into its owner's graveyard.
{T}: Add {W}.
{1}{W}, {T}: Create a 1/1 white Soldier creature token.
Lake of the Dead
Land
If ~this~ would enter, sacrifice a Swamp instead. If you do, put ~this~ onto the battlefield. If you don't, put it into its owner's graveyard.
{T}: Add {B}.
{T}, Sacrifice a Swamp: Add {B}{B}{B}{B}.