Glacial Fortress

This land enters tapped unless you control a Plains or an Island.
{T}: Add {W} or {U}.

Reliquary Tower

You have no maximum hand size.
{T}: Add {C}.

({T}: Add {G} or {W}.)
This land enters tapped unless you control two or more basic lands.

This land enters tapped unless you control a Forest or an Island.
{T}: Add {G} or {U}.

{T}: Add one mana of any color in your commander's color identity.

If a triggered ability of an Ally you control triggers, that ability triggers an additional time.

({T}: Add {W} or {U}.)
This land enters tapped unless you control two or more basic lands.