A few Heraldic ideas

[Toffee.]

Medallion Beast Garuda -LIGHT-
Lvl5
[Winged-Beast/Effect]
If the Opponent controls a monster and you control monsters, you can Special Summon this card(from your Hand). During either player's turn, you can Banish this card in your Graveyard and Target 1 face-up "Medallion Beast" you control: Increase it's ATK and DEF by 300 until the End Phase. Destroy this card during the End Phase of a turn in which it was Summoned by it's own effect.
1900ATK / 1400DEF

Medallion Beast Ged -WATER-
Lvl3
[Fish/Effect]
Once per turn, while this card is in the Graveyard, you can Banish 1 other "Medallion Beast Ged" in your Graveyard: Add to your hand 1 "Medallion Arts" card from your Deck. The effect of "Medallion Beast Ged" can only be activated once per turn.
500ATK / 500DEF

Grand Medallion Arts -Spell-
Target 3 "Medallion Beast" monsters in your Graveyard; Special Summon those targets, then Xyz Summon 1 Xyz Monster using exactly those cards as Xyz Material. You cannot Special Summon other monsters the turn you activate this card.

Inherited Medallion Arts -Quick-Play Spell-
Target 1 face-up "Medallion Beast" monster you control: Send to your Graveyard 1 "Medallion Beast" monster from your Deck with the same name as the Target monster; Target monster gains 1000 ATK until the End Phase. Only 1 "Inherited Medallion Arts" can be activated per turn.

Medallion Polish -Trap-
Discard 1 "Medallion Beast" monster: Activate 1 of the following effects;
•Draw 2 cards.
•Add to your hand 1 "Medallion Arts" card from your Deck.