London Sanctum

Sanctums enter and stay tapped until you control 3 sanctums, in which case you gain an emblem with, "Sanctums you control untap as normal. Spells you control have flash."
- Mana costs for artifacts you control are
reduced by {1} for each sanctum you control.
{2}{t}: Search your library for an artifact card
and put it into your hand.
{4}: Search your library for a sanctum and put it
into your hand.