At the beginning of your upkeep, put a tide counter on Rikala. Then if there are four or more tide counters on Rikala, remove them. Creatures you control get +1/+0 for each tide counter on Rikala. Whenever you tap an Island for mana, if there are three or more tide counters on Rikala, add an additional {U}.
![Rikala, Homarid King [Mystery Booster: Commander Edition] MTG Single Magic: The Gathering | Multizone: Comics And Games](http://multizone.ca/cdn/shop/files/38e13b54-14b7-52b2-8043-f2f12e48d9cc.png?v=1785889208)
