Refuse to Yield

Target creature gets +2/+7 until end of turn. Untap it.

Tree of Perdition

Defender
{T}: Exchange target opponent's life total with Tree of Perdition's toughness.

Plains

Indomitable Ancients

Demonic Tutor

Search your library for a card, put that card into your hand, then shuffle.

Catapult Captain

{2}{B}, {T}, Sacrifice another creature: Target opponent loses life equal to the sacrificed creature's toughness.

Catapult Fodder

At the beginning of combat on your turn, if you control three or more creatures that each have toughness greater than their power, transform Catapult Fodder.

Catapult Fodder // Catapult Captain

Swamp

Stoneskin

Flash
Enchant creature
Enchanted creature gets +0/+10.