So I am a fan of Magic the Gathering, been playing since the release of Ikoria. Recently I have been coming up with custom Magic cards either featuring my OC's or just general custom ones. Not sure where else to post the ideas so I'm doing this journal right now for it. I will note that they may not be properly balanced, but I feel that some custom cards are like that.

Tempest, The wolf lord.
Legendary creature-Wolf Noble
Mana cost: 1:Red 1:Green 4:Generic
Power/Toughness 4/4
Daybound
4 generic mana and tap: search your library for a wolf or werewolf creature card with mana value less than or equal to the number of wolves and/or werewolves you control, and place it on the battlefield.

Tempest, Rage of the pack
Legenday creature-Werewolf warrior
Power/toughness 8/8
Nightbound, trample
2 Green 2 Red 4 generic: Until end of turn, all creatures you control gain Trample, indestructible, and +X/+X, where X is the number of wolves and/or werewolves you control.
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Eilei, Genetics Prodigy
Legendary Creature-Rat Scientist
Manna Cost: 1:green 2:Black 2:Generic
Power/Toughness 1/6
Breeding expert-If you were to create a token, create twice as many tokens instead. This ability does not trigger during Eilei's tap ability.
4 generic and tap: Create a non-legendary token copy of another target creature, This ability costs 2 more if it targets a legendary creature.
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Unatural night
Enchantment
Mana cost: 1:green 1:red 4:generic

When this enchantment enters, it immediately becomes night, and transform all werewolves. When you cast a werewolf creature you may have it enter transformed. wolves and/or werewolves get +2/+2, and as long as unatural night is on the field it cannot become Day.
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Gathering of the pack
Enchantment
Mana cost: 3:green 3:Red
Whenever you cast a werewolf creature spell, create X 2/2 Green wolf Creature token's, where X is that creatures mana cost. Whenever a non-token wolf creature enters the battlefield under your control, create a 4/4 Red and Green Werewolf creature token.
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Crystal, Gravid Mother
Legendary Creature-Kitsune
manacost: 3: White, XX
power toungness1/3
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Crystal enters with X incubation counters.
Crystal gets +0/1 for each incubation counter on her.
If you were to create a creature token, create X creature tokens instead where X equals the number of incubation counters on Crystal.
Crystal cannot have more than one incubation counter placed on her per turn.
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Toxie, Toxic Beauty
Legendary Creature: Canine Horror
Manacost 1: Green, 1:Black, 3 generic
power/Toughness 2/3

Deathtouch, toxic 1
If you control at least one Crystal creature, Toxie gains indestructable during combat.
Toxic love-When ever toxie attacks a player with poision counters, she gains each of the following effects.
1-4 counters: First strike
5-8 counters: lifelink
9 counters: +2/+2 and menace