diff --git a/CHANGELOG.md b/CHANGELOG.md
index f2fd928..f3ca751 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 5.1.0 - 2023-07-14
+
+### Added
+
+- `Innmind\BlackBox\Set\Call`
+
 ## 5.0.0 - 2023-05-29
 
 ### Added
diff --git a/proofs/set/call.php b/proofs/set/call.php
new file mode 100644
index 0000000..a246e39
--- /dev/null
+++ b/proofs/set/call.php
@@ -0,0 +1,21 @@
+<?php
+declare(strict_types = 1);
+
+use Innmind\BlackBox\{
+    Set,
+    Random,
+};
+
+return static function() {
+    yield test(
+        'Set\Call always return a new value',
+        static function($assert) {
+            $set = Set\Call::of(static fn() => new \stdClass);
+
+            $assert
+                ->expected($set->values(Random::default)->current()->unwrap())
+                ->not()
+                ->same($set->values(Random::default)->current()->unwrap());
+        },
+    );
+};
diff --git a/src/Set/Call.php b/src/Set/Call.php
new file mode 100644
index 0000000..c0bf265
--- /dev/null
+++ b/src/Set/Call.php
@@ -0,0 +1,25 @@
+<?php
+declare(strict_types = 1);
+
+namespace Innmind\BlackBox\Set;
+
+use Innmind\BlackBox\Set;
+
+final class Call
+{
+    /**
+     * @template T
+     *
+     * @param callable(): T $call
+     *
+     * @return Set<T>
+     */
+    public static function of(callable $call): Set
+    {
+        return FromGenerator::of(static function() use ($call) {
+            while (true) {
+                yield $call();
+            }
+        });
+    }
+}