The Old One's Army

The Old One's Army enters the battlefield with
5 wave counters and 1 tier counter on it.
When The Old One's Army enters the battlefield,
if you control no Portals, create two Tier One Mysterious Portal enchantment tokens.
At the beginning of your upkeep, remove a wave
counter from The Old One's Army. Then, if it
has no wave counters on it and less than three tier counters on it, put a tier counter on it. Then, put
X wave counters on it. Where X is is the number
of tier counters on it plus 4.