Phyrexia: All Will Be One

Aspirant's Ascent | Instant | | Until end of turn, target creature gets +1/+3 and gains flying and toxic 1. (Players dealt combat damage by that creature also get a poison counter.) | Eli Minaya

Minor Misstep | Instant | | Counter target spell with mana value 1 or less. | Lorenzo Mastroianni

Black Sun's Twilight | Instant | | Up to one target creature gets -X/-X until end of turn. If X is 5 or more, return a creature card with mana value X or less from your graveyard to the battlefield tapped. | Jonas De Ro

Whisper of the Dross | Instant | | Target creature gets -1/-1 until end of turn. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) | Eli Minaya

Free from Flesh | Instant | | Target creature gets +2/+2 until end of turn. Put two oil counters on it. | Isis

Hexgold Slash | Instant | | Hexgold Slash deals 2 damage to target creature. If that creature has toxic, Hexgold Slash deals 4 damage to that creature instead. | Eli Minaya

Tyvar's Stand | Instant | | Target creature you control gets +X/+X and gains hexproof and indestructible until end of turn. (A creature with hexproof and indestructible can't be the target of spells or abilities your opponents control. Damage and effects that say "destroy" don't destroy it.) | Kieran Yanner