Holo cards have the shiny holographic effect on the artwork only, while reverse holos have foil on everything except the artwork
If you already have an idea of what you're looking for, you can buy singles online or at your local trading card store
Start by drawing a card from the top of your deck
If youre self milling a lot then maybe you want Timeless Witness, and there are effects like Unnatural Restoration that lend themselves to counter-based strategies
P/T Set Number 14 Language Espaol Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Standard, Timeless, Vintage
For instance, in the example image provided, the card features the Pokmon Charmander