Gemrazer | Creature | Beast | Mutate {1}{G}{G} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
Reach, trample
Whenever this creature mutates, destroy target artifact or enchantment an opponent controls. | Svetlin Velinov
4.0 LSV
Frondland Felidar | Creature | Cat Beast | Vigilance
Creatures you control with vigilance have "{1}, {T}: Tap target creature." | Steve Prescott
4.0 LSV
Umori, the Collector | Legendary Creature | Ooze | Companion — Each nonland card in your starting deck shares a card type. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} any time you could cast a sorcery.)
As Umori, the Collector enters the battlefield, choose a card type.
Spells you cast of the chosen type cost {1} less to cast. | Jehan Choo
4.0 LSV