Ancient Schemings

Whenever a player casts a spell or a creature is
tapped, put a charge counter on Ancient
Schemings.
At the beginning of your upkeep, you may
remove any number of charge counters from
Ancient Schemings. If at least four counters were removed this way, put a +1/+1 counter on target creature. If at least five counters were removed,
draw a card. If at least thirty were removed,
you win the game.