Gambler's Blade Greatsword

Rare

Weapon, rare (requires attunement) Martial weapon, melee weapon 6 lb. Mastery: Graze 2d6 slashing - Heavy, Two‑Handed Choose a magical bonus of +1 to +3. This sword gains that bonus to its attack and damage rolls. For each point of bonus you choose for the sword, you take a corresponding penalty (−1 to −3) to your death saving throws. You can change this magical bonus each day at dawn. Curse. This weapon is cursed, and becoming attuned to it extends the curse to you. Until the curse is broken with a remove curse spell or similar magic, you are unwilling to part with the weapon. Heavy. You have Disadvantage on attack rolls with a Heavy weapon if it's a Melee weapon and your Strength score isn't at least 13 or if it's a Ranged weapon and your Dexterity score isn't at least 13. Two-Handed. A Two-Handed weapon requires two hands when you attack with it. Mastery: Graze. If your attack roll with this weapon misses a creature, you can deal damage to that creature equal to the ability modifier you used to make the attack roll. This damage is the same type dealt by the weapon, and the damage can be increased only by increasing the ability modifier.

Heward's Handy Haversack

Rare

Wondrous item, rare 5 lb. This backpack has a central pouch and two side pouches, each of which is an extradimensional space. Each side pouch can hold up to 200 pounds of material, not exceeding a volume of 25 cubic feet. The central pouch can hold up to 500 pounds of material, not exceeding a volume of 64 cubic feet. The haversack always weighs 5 pounds, regardless of its contents. Retrieving an item from the haversack requires a Utilize action or a Bonus Action (your choice). When you reach into the haversack for a specific item, the item is always magically on top. If any of its pouches is overloaded, pierced, or torn, the haversack ruptures and is destroyed. If the haversack is destroyed, its contents are lost forever, although an Artifact always turns up again somewhere. If the haversack is turned inside out, its contents spill forth unharmed, and the haversack must be put right before it can be used again. Each pouch of the haversack holds enough air for 10 minutes of breathing, divided by the number of breathing creatures inside. Placing the haversack inside an extradimensional space created by a Bag of Holding, Portable Hole, or similar item instantly destroys both items and opens a gate to the Astral Plane. The gate originates where the one item was placed inside the other. Any creature within 10 feet of the gate and not behind Total Cover is sucked through it and deposited in a random location on the Astral Plane. The gate then closes. The gate is one-way only and can't be reopened.