Counter target spell.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever this creature deals combat damage to a player, you may return target creature that player controls to its owner's hand.

When this creature dies, it deals 3 damage to any target.

Creatures with power less than this creature's power can't block it.
This creature gets +1/+1 for each Aura on the battlefield.

: Return two target cards from an opponent's graveyard to their hand. Destroy target artifact or enchantment.

Flying
When this creature enters, each opponent discards a card.

When this creature enters, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Devour 2 (As this creature enters, you may sacrifice any number of creatures. It enters with twice that many +1/+1 counters on it.)
: This creature gains trample until end of turn.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever this creature deals combat damage to a player, you may draw a card.

As this creature enters, it becomes your choice of a 3/3 creature, a 2/2 creature with flying, or a 1/6 creature with defender.

Reach
When this creature dies, create a 2/4 black Spider creature token with reach.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever this creature deals combat damage to a player, that player discards two cards.

Whenever an Aura becomes attached to this creature, create two 1/1 green Saproling creature tokens.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Return target permanent to its owner's hand.

Fiery Fall deals 5 damage to target creature.
Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)