Just ignore the summoning conditions.
Chaos Core
DARK/Level 3/Fiend/Effect
ATK/0 DEF/0
You can only use this card name’s (1) effect once per turn.
(1): When this card is targeted by a card effect or for an opponent’s monster’s attack (Quick Effect): You can send up to 3 cards from your hand and/or Deck to the GY (1 each of “Uria, Lord of Searing Flames”, “Hamon, Lord of Striking Thunder”, and “Raviel, Lord of Phantasms”), and if you do, place 1 Phantasm Counter on this card for each sent to the GY, and if you do that, you take no battle damage for the rest of this turn.
(2): If this card would be destroyed by battle or card effect, you can remove 1 Phantasm Counter from it instead.
Konton no Shoukanshin / Chaos Summoning Beast
DARK/Level 1/Fiend/Effect
ATK/0 DEF/0
You can only use this card name’s (1) and (2) effects once per turn each.
(1): You can Tribute this card; Special Summon 1 “Uria, Lord of Searing Flames”, 1 “Hamon, Lord of Striking Thunder”, or 1 “Raviel, Lord of Phantasms” from your hand, ignoring its Summoning conditions.
(2): You can banish this card from your GY; add 1 “Fallen Paradise” from your Deck to your hand.
Shichisei no Kaimon / The Seven Spirit Gates Unleashed
Continuous Spell
You can only activate 1 card with this card’s name per turn.
(1): When this card is activated: You can add, from your Deck to your hand, 1 “Uria, Lord of Searing Flames”, 1 “Hamon, Lord of Striking Thunder”, 1 “Raviel, Lord of Phantasms”, or 1 monster that specifically lists any of those cards in its text.
(2): Once per turn: You can discard 1 card; Special Summon 1 Fiend monster with 0 ATK and DEF from your GY.
(3): Once per turn, if you control a Level 10 monster: You can add 1 Continuous Spell from your GY to your hand.
Kakusei no Sangenma / The Sacred Beasts Awaken
Continuous Trap
1) This card gains these effects, depending on the number of “Uria, Lord of Searing Flames”, “Hamon, Lord of Striking Thunder”, and “Raviel, Lord of Phantasms” you control with different names.
* 1+: Each time your opponent Normal or Special Summons a monster(s), gain LP equal to their combined ATK.
* 2+: Negate the activated effects of monsters that your opponent controlled when that effect was activated.
* 3: Any monster sent to your opponent’s GY is banished instead.
2) Once per turn, during your turn, if you control a Level 10 monster: You can add 1 Continuous Trap from your GY to your hand.