mtg back of card Classic Standard Deck Protector Sleeves (100ct) for Magic: The Gathering Back for More - Ikoria:

If your opponent has something as powerful as The One Ring on the battlefield, odds are that almost anything else that they might cast out of their library is going to be an improvement

Here is the suggested list of the major play modes from easiest to hardest from a new-player standpoint

When Dreadhorde Arcanist attacks, the player may cast an instant or sorcery card from their graveyard for free if its mana value is equal to or less than Dreadhorde Arcanist's power

With less of a focus on low-cost characters than Amber/Amethyst and fewer heavy hitters than Sapphire/Steel, Emerald/Ruby places a big emphasis on solid mid-range options

Its pretty common to play this on turn three before you play your land for the turn to ensure it works, and it can contribute a fair bit of damage in the early turns, too

The List Smuggler's Surprise is versatile for what you want with green