budget mtg commander decks Shower Thoughts: Ten Commanders That Pack a Punch Brewing a Magic: The Gathering

This lets all players mill three cards at the start of each upkeep, one of which can be removed from play, after which the Kin becomes a copy of that card

Surrounded by Water gives all characters at this location both Ward and Evasive

With Tiggers Swash Your Buckles ability, every action card to play gives Tigger +1 Strength and +1 Lore

Expensive as a whole, sure

If they haven't been under your control since the turn began and don't otherwise have haste, they can't attack that turn

it cheats huge dragons right onto the battlefield tapped and attacking, which lets you skip the slow buildup and immediately pressure opponents