Charged Conjuration

Goblin spells you cast cost less to cast. (If it doesn't require , it costs less to cast.)

At the beginning of your end step, conjure a random card from Goblin Influx Array's spellbook into your hand.

Sketch and Lore — , : Target opponent exiles cards from the top of their library until they exile an instant, sorcery, or creature card. You may cast that card without paying its mana cost. If you cast a creature spell this way, it gains haste and "At the beginning of the end step, sacrifice this creature." Activate only as a sorcery.

Flying

At the beginning of your end step, each Dragon card in your hand perpetually gains "This spell costs less to cast."

First strike

Equipped creature has first strike.

At the beginning of your upkeep, a random artifact card in your hand perpetually gains "This spell costs less to cast."

Reconfigure (: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

At the beginning of your upkeep, flip a coin. If you lose the flip, sacrifice this enchantment.

Whenever a player casts a spell, that player flips a coin. If they lose the flip, counter that spell.

Enchant creature you control

Enchanted creature gets +3/+2, has haste, and attacks each combat if able.

: Return Craving of Yeenoghu from your graveyard to the battlefield attached to target creature you control. Craving of Yeenoghu perpetually gains "Enchanted creature gets -1/-1." Activate only as a sorcery.