Given that you are seeking a solution for token gating Twitter giveaways across multiple blockchains, including Ethereum Virtual Machine (EVM), Solana (Sol), and Tezos (XTZ), you will need a more comprehensive solution than Guild.

You can build a custom solution using a combination of APIs, SDKs, and smart contracts. Here's a high-level overview of the steps to create a cross-chain token gating system:

Design the giveaway workflow: Determine how you want users to participate in the giveaway, e.g., by retweeting, liking, or replying to a tweet, and how you will verify their token ownership on different chains.

Connect to Twitter API: Use the Twitter API to monitor user interactions with your giveaway tweets. You can find the documentation here: https://developer.twitter.com/en/docs

Interact with the blockchains:

• For Ethereum and other EVM-compatible chains, use the Web3.js or Ethers.js libraries to interact with the blockchain and verify token ownership.
• For Solana, use the Solana JavaScript SDK: https://github.com/solana-labs/solana-web3.js
• For Tezos, use the Taquito JavaScript library: https://github.com/ecadlabs/taquito

Build smart contracts: For each blockchain, create a smart contract to handle token gating. These contracts will verify token ownership and, if necessary, manage the giveaway rewards.

Develop a server-side application: Create an application that listens for events from the Twitter API and communicates with the smart contracts to verify token ownership. Depending on your preferences, you can use Node.js, Python, or any other server-side language.

Deploy and test: Deploy your smart contracts and server-side application, and test the entire workflow to ensure everything works correctly.

Building a custom solution like this requires development experience with multiple technologies, including JavaScript, smart contracts, and web3 libraries. If you are new to coding and web3, it might be a good idea to collaborate with an experienced developer to help you bring your idea to life.

Have you looked at Collab.Land? It supports both Solana and Tezos. Possibly you could request participants to join a Telegram and Discord channel to claim a giveaway reward.