Mana Leak

Counter target spell unless its controller pays .

Rathi Dragon

Flying (This creature can’t be blocked except by creatures with flying or reach.)
When Rathi Dragon enters the battlefield, sacrifice it unless you sacrifice two Mountains.

Canopy Spider

Reach (This creature can block creatures with flying.)

Bog Imp

Flying (This creature can’t be blocked except by creatures with flying or reach.)

Barrin

Sacrifice a permanent: Return target creature to its owner’s hand.

Snapping Drake

Flying (This creature can’t be blocked except by creatures with flying or reach.)

Dread Reaper

Flying
When Dread Reaper enters the battlefield, you lose 5 life.

Snapping Drake

Flying (This creature can’t be blocked except by creatures with flying or reach.)

The Wretched

At end of combat, gain control of all creatures blocking The Wretched for as long as you control The Wretched.

Urza’s Bauble

, Sacrifice Urza’s Bauble: Look at a card at random in target player’s hand. You draw a card at the beginning of the next turn’s upkeep.

Fire Drake

Flying
: Fire Drake gets +1/+0 until end of turn. Activate this ability only once each turn.

Radjan Spirit

: Target creature loses flying until end of turn.

Rod of Ruin

, : Rod of Ruin deals 1 damage to any target.

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Mana Flare

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

Forbidden Ritual

Sacrifice a nontoken permanent. If you do, target opponent loses 2 life unless that player sacrifices a permanent or discards a card. You may repeat this process any number of times.

Chronatog

: Chronatog gets +3/+3 until end of turn. You skip your next turn. Activate this ability only once each turn.