Magmalizard

[Toffee.]

When you Normal Summon a Reptile-Type monster, you can Special Summon this card(from your hand). If this card is Special Summoned in this way, you can send up to 3 Level 4 FIRE monsters from your Deck to your Graveyard. Then, this card gains 200 ATK for each monster sent to the Graveyard in this way, until the End Phase. You can only activate this effect of "Magmalizard" once per turn.

Kinda' in the mood for something a little outlandish.
FIRE monsters typically have 200 DEF, if only for the sake of Rekindling, but even then, none of them are Reptile-Type. Regardless, though, I doubt someone could make a play THAT game-winning off using this card; Rekindling is at 1 anyway, not like it matters.
Plus, most of this card's ideas are based around the concept of Kagetokage being more of a thing.
Speaking of Kage, since you can't Normal Summon it, it's not like you could use this off Kage anyway. Furthermore, this clashes with Maked Chameleon, another Reptile that is seen here and there.
So really, it's just a weird idea.
'Course, I'm probably going to end up lowering the number of FIREs it can mill, mostly because I'm betting too much on Reptile/[x].dek being too wonky as a whole to otherwise have that much of an impact on things; Go figure.

[-Dom-]

I like the idea of the card: I'm just trying to think of a reptile that you could fit into a fire deck, as then this card becomes very good, fuelling Rekindling and generally helping with grave control. However, the best (honestly) level 4 reptile I could find was an Alien card if the intention is to stick with FIRE, or Lion Alligator, basically a 1900 beater (though he does do piercing with another reptile on the field, which could combo w this).