Charizard ex (Fire / Shining Revelry) The new Charizard is capable of charging itself with the Stoke ability, then unleashing 150 damage with little issue
The Golem costs 7, in an artifact and a dork for that aforementioned synergy, and then on arrival to the battlefield, will destroy any nonland permanent, so it's a limited Vindicate on a stick
Treasures and card advantage stapled to cheaply-costed Pirate
Of course, modern cards that you can easily purchase today dont come anywhere close to fetching millions, but its not uncommon to see prices for some of them breaking the $1,000 ceiling
For a single mana, it triggers any leaves the battlefield ability, and you can activate it at instant speed to play around once per turn restrictions on cards like Kishla Skimmer
Also, on the early turns this is a three-drop but later on in the mid or late game you get three of these for just a six-mana investment