Implement dex and thorns effects

tools/balance/sim-balance.test.mjs

@@ -418,3 +418,32 @@ test("simulateCombat: exhaust cards do not return through discard reshuffle", ()
   assert.equal(r.win, false);
   assert.equal(r.draw, true);
 });
+
+test("simulateCombat: dex increases block gained from cards", () => {
+  const data = {
+    cards: {
+      Footwork: { name: "Footwork", cost: 1, kind: "Power", dex: 2 },
+      Defend: { name: "Defend", cost: 1, kind: "Skill", block: 5 },
+    },
+    starterDeck: ["Footwork", "Defend"],
+    monsters: [{ name: "Dummy", maxHp: 99, intents: [{ kind: "Attack", value: 6 }] }],
+  };
+  const r = simulateCombat(data, () => 0.999999);
+  assert.equal(r.win, false);
+  assert.equal(r.draw, true);
+  assert.equal(r.playerHpRemaining, 80);
+});
+
+test("simulateCombat: thorns reflects unblocked attack damage", () => {
+  const data = {
+    cards: {
+      Spikes: { name: "Spikes", cost: 1, kind: "Power", thorns: 4 },
+    },
+    starterDeck: ["Spikes"],
+    monsters: [{ name: "Dummy", maxHp: 4, intents: [{ kind: "Attack", value: 1 }] }],
+  };
+  const r = simulateCombat(data, () => 0.999999);
+  assert.equal(r.win, true);
+  assert.equal(r.turns, 1);
+  assert.equal(r.playerHpRemaining, 79);
+});