Eris, Roar of the Storm

This spell costs less to cast if you have eight or more instant and/or sorcery cards in your graveyard.

Ward

Magecraft — Whenever you cast or copy an instant or sorcery spell, target creature has base power and toughness 8/8 until end of turn.

This spell costs less to cast, where X is the greatest mana value among Elementals you control.

Flying

When this creature enters, if you cast it, return all non-Elemental creatures to their owners' hands.

This spell costs less to cast for each card you own in exile and in your graveyard that's an instant card, a sorcery card, or a card that has an Adventure.

Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

This spell costs less to cast for each creature card in your graveyard.

Whenever another creature you control enters, if you cast it, sacrifice it. Conjure a duplicate of it onto the battlefield. The duplicate perpetually becomes a Robot artifact in addition to its other types.

This spell costs less to cast, where X is the greatest number of artifacts an opponent controls.

Flying, trample, haste

Whenever this creature deals combat damage to a player, you create a Treasure token for each artifact that player controls.

This spell costs less to cast for each instant and sorcery card in your graveyard.

You have no maximum hand size.

At the beginning of your upkeep, put a knowledge counter on The Magic Mirror, then draw a card for each knowledge counter on The Magic Mirror.