At the beginning of your precombat main phase, add for each charge counter on Altar of Shadows.
, : Destroy target creature. Then put a charge counter on Altar of Shadows.
Domain — This spell costs less to cast for each basic land type among lands you control.
Flying
Domain — At the beginning of your upkeep, sacrifice Draco unless you pay . This cost is reduced by for each basic land type among lands you control.
, : Put a fate counter on target permanent.
, , Sacrifice Oblivion Stone: Destroy each nonland permanent without a fate counter on it, then remove all fate counters from all permanents.
Flying
Menace (This creature can't be blocked except by two or more creatures.)
Two-Headed Dragon can block an additional creature each combat.
: Two-Headed Dragon gets +2/+0 until end of turn.