Port Nyanzaru's Dinosaur Race

When Port Nyanzaru's Dinosaur Race enters the battlefield, put 10 Race counters on all players. Whenever a player casts a spell, remove a Race
counter from them. Whenever a player is dealt
damage, put a Race counter on them. At the beginning of each player's upkeep, if that player
has no Race counters on them, they win the
game.
Dinosaur spells cost {1} less to cast and have
trample and haste.