Companion — Each permanent card in your starting deck has mana value 2 or less. (If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.)LifelinkOnce during each of your turns, you may cast a permanent spell with mana value 2 or less from your graveyard.
Companion — Each permanent card in your starting deck has an activated ability. (If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.)Abilities you activate that aren't mana abilities cost less to activate. This effect can't reduce the mana in that cost to less than one mana., : Target creature...
Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)At the beginning of your upkeep, return target creature card from your graveyard to the battlefield.At the beginning of each opponent's upkeep, that player sacrifices a creature of their choice.
TrampleWhenever you tap a land for mana, add one mana of any type that land produced.Whenever an opponent taps a land for mana, that land doesn't untap during its controller's next untap step.
FlyingWhen Niv-Mizzet Reborn enters, reveal the top ten cards of your library. For each color pair, choose a card that's exactly those colors from among them. Put the chosen cards into your hand and the rest on the bottom of your library in a random order.
Instant and sorcery spells you cast cost less to cast.Whenever a spell or ability you control counters a spell, you may draw a card. If you do, discard a card.
This spell costs less to cast for each artifact you control.When Emry, Lurker of the Loch enters, mill four cards.: Choose target artifact card in your graveyard. You may cast that card this turn. (You still pay its costs. Timing rules still apply.)
FlyingInfect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.): Skithiryx, the Blight Dragon gains haste until end of turn.: Regenerate Skithiryx.