Minor Runewell

Whenever a creature you control dies, add a
charge counter to the minor runewell.
{b/r}{t}, Remove a charge counter from the minor runewell: Create a 2/2 red sinspawn token
with haste.
{1}{b/r}{b/r}, Sacrifice the minor runewell: Create a
X/X red dragon token with flying and haste,
where X is the number of charge counters
on the minor runewell.