Krark's Other Thumb

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

Snickering Squirrel

You may tap Snickering Squirrel to increase the result of a die any player rolled by 1.

Watermarket

{T}: Add {C}{C}. Spend this mana only to cast spells with watermarks.

Destroy target creature with reminder text. (Reminder text is any italicized text in parentheses that explains rules you already know.)

Cheatyface

If Cheatyface is in your hand, you may sneak Cheatyface onto the battlefield. If an opponent catches you right away, that player may exile Cheatyface.
Flying

Goblin Tutor

Roll a six-sided die. If you roll a 1, Goblin Tutor has no effect. Otherwise, search your library for the indicated card, reveal it, put it into your hand, then shuffle.
2 — A card named Goblin Tutor
3 — An enchantment
4 — An artifact
5 — A creature
6 — An instant or sorcery