Chimil, the Inner SunSpells you control can't be countered. At the beginning of your end step, discover 5. (Exile cards from the top of your library until you exile a nonland card with mana value 5 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Its controller creates a tapped Powerstone token

They mutate into the creature on top plus all abilities from under it

At the beginning of each combat

Fear (This creature can't be blocked except by artifact creatures and/or black creatures

you may put a card of that type from among the revealed cards into your hand

you may put a quest counter on Bloodchief Ascension

Whenever a card is put into an opponent's graveyard from anywhere

and so on for double strike

instead create one of each

Whenever this creature deals combat damage to a player

Sacrifice a creature: Add

You lose life equal to its mana value