{3}, {T}: Target player mills two cards. If two cards that share a color were milled this way, repeat this process.

(Dryad Arbor isn't a spell, it's affected by summoning sickness, and it has "{T}: Add {G}.")

Exile Elvish Spirit Guide from your hand: Add {G}.

When Goblin Engineer enters the battlefield, you may search your library for an artifact card, put it into your graveyard, then shuffle. {R}, {T}, Sacrifice an artifact: Return target artifact card with mana value 3 or less from your graveyard to the battlefield.

{T}: Choose target artifact a player controls and target artifact card in that player's graveyard. If both targets are still legal as this ability resolves, that player simultaneously sacrifices the artifact and returns the artifact card to the battlefield.

Flying As Iona, Shield of Emeria enters the battlefield, choose a color. Your opponents can't cast spells of the chosen color.

As Painter's Servant enters the battlefield, choose a color. All cards that aren't on the battlefield, spells, and permanents are the chosen color in addition to their other colors.

Exile Simian Spirit Guide from your hand: Add {R}.

This spell can't be countered. {R/G}: Target spell can't be countered.

You may reveal a creature or land card you own from outside the game and put it into your hand. Exile Living Wish.