After reading the headline, it's most probably Way of the Cameleon.

These are the cards mentioned in this post:

**[Embassy](http://wiki.dominionstrategy.com/index.php/Embassy)** - **5◯** - Action - *[Hinterlands](http://wiki.dominionstrategy.com/index.php/Hinterlands)*    
> **+5 Cards**    
> Discard 3 cards.    
> ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯    
> When you gain this, each other player gains a Silver.


**[Tunnel](http://wiki.dominionstrategy.com/index.php/Tunnel)** - **3◯** - Victory, Reaction - *[Hinterlands](http://wiki.dominionstrategy.com/index.php/Hinterlands)*    
> **2VP**    
> ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯    
> When you discard this other than during Clean-up, you may reveal it to gain a Gold.

*(I'm a bot, bleep, bloop.  I hope this was helpful to someone!)*

These are the cards mentioned in this post:

**[Embassy](http://wiki.dominionstrategy.com/index.php/Embassy)** - **5◯** - Action - *[Hinterlands](http://wiki.dominionstrategy.com/index.php/Hinterlands)*    
&gt; **+5 Cards**    
&gt; Discard 3 cards.    
&gt; ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯    
&gt; When you gain this, each other player gains a Silver.


**[Tunnel](http://wiki.dominionstrategy.com/index.php/Tunnel)** - **3◯** - Victory, Reaction - *[Hinterlands](http://wiki.dominionstrategy.com/index.php/Hinterlands)*    
&gt; **2VP**    
&gt; ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯    
&gt; When you discard this other than during Clean-up, you may reveal it to gain a Gold.

*(I'm a bot, bleep, bloop.  I hope this was helpful to someone!)*

Embassy/Tunnel in itself is already dope, but with WotC you only need to have a Gold and an Embassy collide for a Province. Possibly weak to handsize attacks, but you still got Tunnel and a ton of Golds for a lucky 9$.

Small appreciation post for the Embassy/Tunnel/Wot Chameleon combo