Abilities that trigger when a creature becomes tapped won't trigger when a creature phases in tapped
On the next turn, you might grab Mana Vault or Mystic Remora if you also have Blue in your commander's identity
(Plus Merlin, Shapeshifter in his own human form.) Each of the shapeshifting Merlin cards offers a different boon when they first arrive on the table and when they leave, presenting the opportunity to combine them with cards that cycle them in and out of your hand to stack up the benefits
Plus, if it dies, its an enchantment creature, so it contributes two card types itself
In the same way, Id caution against taking any deal for a Black Lotus thats unreasonably undervalued, dont trust someone offering to sell you an expensive booster box for half the market price
(To behold a Merfolk, choose a Merfolk you control or reveal a Merfolk card from your hand.) When this creature enters, create a 1/1 white and blue Merfolk creature token