Contact Other Plane

Roll a d20.
1—9 | Draw two cards.
10—19 | Scry 2, then draw two cards.
20 | Scry 3, then draw three cards.

Forest

Pippa, Duchess of Dice

{2}{G}, {T}: Roll a six-sided die. It becomes a green Die creature token with power and toughness each equal to its result.
{2}{U}, {T}: Reroll any die. (Activate only any time it makes sense.)

Command Tower

{T}: Add one mana of any color in your commander's color identity.

Krark's Other Thumb

If you would roll a die, instead roll two of those dice and ignore one of those results.

Sol Ring

Feywild Trickster

Whenever you roll one or more dice, create a 1/1 blue Faerie Dragon creature token with flying.

Island

Arcane Signet

Pixie Guide

Flying
Grant an Advantage — If you would roll one or more dice, instead roll that many dice plus one and ignore the lowest roll.

Crashing Drawbridge

Defender
{T}: Creatures you control gain haste until end of turn.

Wall of Fortune

Defender
You may tap an untapped Wall you control to have any player reroll a die that player rolled.