Malkuth Rulphim, Fire Pupil

Landfall - Whenever a land enters the battlefiel under your control, create a 1/1 red
Elemental creature token.

Whenever Malkuth Rulphim, Fire Pupil deal combat damage, add X mana in any combination of colors where X is the number of elementals you control at the momento of the damage was produce. Until end of turn, you don't lose this mana as steps and phases end.