tinyCards.user.js

// ==UserScript==
// @name               Tiny Cards
// @namespace          https://www.thecrucible.online/
// @include            https://www.thecrucible.online/play*
// @description        Tiny Cards Less Tiny
// @author             Elysiume
// @version            0.1.0
// @updateURL          https://gist.github.com/elysiumeproto/4fbee655704c944d802aa8444b883b5e7081d492/raw/tinyCards.user.js
// @downloadURL        https://gist.github.com/elysiumeproto/4fbee655704c944d802aa8444b883b5e7081d492/raw/tinyCards.user.js
// ==/UserScript==

const styleAnchorId = "styleAnchor_c20eefcb-c59f-4406-a423-60663590e425";

function addStyle(css) {
    // We need to create an anchor element that we can attach styles to. Check if it already exists to avoid creating multiples.
    const style = document.getElementById(styleAnchorId) || (function() {
        // We want a style-type element with a unique enough ID that it hopefully isn't conflicting with something.
        const style = document.createElement('style');
        style.type = 'text/css';
        style.id = styleAnchorId;
        document.head.appendChild(style);
        return style;
    })();
    const sheet = style.sheet;
    sheet.insertRule(css, (sheet.rules || sheet.cssRules || []).length);
};

addStyle(".board-inner { zoom: 150%; } ");
addStyle(".player-home-row { zoom: 150%; } ");