Dirtwater Wraith

Swampwalk (This creature can’t be blocked as long as defending player controls a Swamp.)
: Dirtwater Wraith gets +1/+0 until end of turn.

Chaosphere

Creatures with flying can block only creatures with flying.
Creatures without flying have reach. (They can block creatures with flying.)

Sapphire Charm

Choose one —
• Target player draws a card at the beginning of the next turn’s upkeep.
• Target creature gains flying until end of turn.
• Target creature an opponent controls phases out. (While it’s phased out, it’s treated as though it doesn’t exist. It phases in before its controller untaps during their next untap step.)

Femeref Healer

: Prevent the next 1 damage that would be dealt to any target this turn.