Magic

Magic (魔法 Mahō) is a paranormal power that alters mana passing through a gate into a form that has an effect on reality.

Information
Magic is made up of six elements; Fire (火 Hi), Water (水 Mizu), Wind (風 Kaze), Earth (土 Tsuchi), Yin (陰 In), and Yang (陽 Yō). It is further classified into four categories; Fire Mana that covers temperature, Water Mana that covers life and healing, Wind Mana that covers outside Divine Protections, and Earth Mana that covers inside Divine Protections. Some incantations for each element are Goa for fire, Huma for water, Fura for wind, Dona for earth, Shamak for Yin, and Jiwald for Yang.

The strength of spells starts from the original incantation and increases by adding El, Ul, or Al (example: Goa, El Goa, Ul Goa, and Al Goa for fire). Yin spells cover debuffs while Yang spells cover buffs. An ordinary person is considered to be well off if they are compatible with either fire, water, wind, or earth. Although incantations are generally used to cast spells, if the user is experienced enough they can cast them without saying anything.

While most of the mages are capable of using one element, some people are able to use multiple elements and if the user is experienced enough they can combine elements like Balroy Temegrif.

Generally, there are two types of primary casters in Re:Zero's world, Magic Users and Spirit Users which are largely differentiated by how they use mana cast to spells. The former draw on their internal mana through their gates  to cast spells while the latter use the mana in the atmosphere with the aid of spirits to process spells directly. However, the level of magic that can be used is still affected by the condition of the contractor's gate. So in cases where the contractor needs to use stronger magic than their gate can handle, a spirit can act as pseudo gate which uses their own mana reserves to bypass that limitation and allow the contractor to cast those spells.Though this will quickly drain mana needed for the spirit to maintain its strength.