Combo: Storeroom and Tunnel
|Storeroom / Tunnel|
|Set(s)||Dark Ages / Hinterlands|
Storeroom and Tunnel is a combo that takes advantage of Storeroom's double discarding to activate multiple Tunnels per turn. Warehouse also works well in a similar capacity as a Tunnel enabler, but not quite as well.
Generally, you'll want to open Storeroom/Tunnel. Once you have Storeroom in hand, if you discard all four other cards, you'll have 8 possible cards to discard, and there is only a 1/4 chance that your Tunnel will not be one of those cards (unless you trigger a reshuffle with the first discard). With that first Gold, you'll be soon be able to buy two Tunnels per turn, taking advantage of Storeroom's +Buy and discard for . Once you've emptied the Tunnels, you'll easily be able to buy a Province every turn.